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766929668 = 221091978929
BaseRepresentation
bin101101101101100…
…110101100000100
31222110010001201112
4231231212230010
53032313222133
6204033544152
725001536361
oct5555465404
91873101645
10766929668
11363a0367a
12194a15058
13c2b7454b
1473bdb468
15474e3648
hex2db66b04

766929668 has 24 divisors (see below), whose sum is σ = 1361467800. Its totient is φ = 377975808.

The previous prime is 766929649. The next prime is 766929689. The reversal of 766929668 is 866929667.

766929668 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 189392644 + 577537024 = 13762^2 + 24032^2 .

It is a super-2 number, since 2×7669296682 = 1176362231317180448, which contains 22 as substring.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81428 + ... + 90356.

It is an arithmetic number, because the mean of its divisors is an integer number (56727825).

Almost surely, 2766929668 is an apocalyptic number.

It is an amenable number.

766929668 is a deficient number, since it is larger than the sum of its proper divisors (594538132).

766929668 is a wasteful number, since it uses less digits than its factorization.

766929668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9239 (or 9237 counting only the distinct ones).

The product of its digits is 11757312, while the sum is 59.

The square root of 766929668 is about 27693.4950484766. The cubic root of 766929668 is about 915.3457711578.

Subtracting 766929668 from its reverse (866929667), we obtain a palindrome (99999999).

The spelling of 766929668 in words is "seven hundred sixty-six million, nine hundred twenty-nine thousand, six hundred sixty-eight".

Divisors: 1 2 4 109 197 218 394 436 788 8929 17858 21473 35716 42946 85892 973261 1759013 1946522 3518026 3893044 7036052 191732417 383464834 766929668