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69996669 = 340957047
BaseRepresentation
bin1000010110000…
…01000001111101
311212201012101020
410023001001331
5120404343134
610540134353
71506650631
oct413010175
9155635336
1069996669
1136569596
121b5373b9
131166a162
149420dc1
156229b49
hex42c107d

69996669 has 8 divisors (see below), whose sum is σ = 93558720. Its totient is φ = 46549536.

The previous prime is 69996653. The next prime is 69996671. The reversal of 69996669 is 96669996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 69996669 - 24 = 69996653 is a prime.

It is a super-2 number, since 2×699966692 = 9799067342191122, which contains 22 as substring.

69996669 is a strobogrammatic number because it is the same when read upside-down.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69996629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27297 + ... + 29750.

It is an arithmetic number, because the mean of its divisors is an integer number (11694840).

Almost surely, 269996669 is an apocalyptic number.

It is an amenable number.

69996669 is a deficient number, since it is larger than the sum of its proper divisors (23562051).

69996669 is a wasteful number, since it uses less digits than its factorization.

69996669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57459.

The product of its digits is 8503056, while the sum is 60.

The square root of 69996669 is about 8366.4011976476. The cubic root of 69996669 is about 412.1219927337.

The spelling of 69996669 in words is "sixty-nine million, nine hundred ninety-six thousand, six hundred sixty-nine".

Divisors: 1 3 409 1227 57047 171141 23332223 69996669