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68660692 = 2271419577
BaseRepresentation
bin1000001011110…
…10110111010100
311210012022202121
410011322313110
5120034120232
610451345324
71462414642
oct405726724
9153168677
1068660692
1135836881
121abb2244
13112c0039
149194192
156063d97
hex417add4

68660692 has 24 divisors (see below), whose sum is σ = 122351040. Its totient is φ = 33707520.

The previous prime is 68660689. The next prime is 68660693. The reversal of 68660692 is 29606686.

It is a happy number.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68660693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118708 + ... + 119284.

It is an arithmetic number, because the mean of its divisors is an integer number (5097960).

Almost surely, 268660692 is an apocalyptic number.

It is an amenable number.

68660692 is a deficient number, since it is larger than the sum of its proper divisors (53690348).

68660692 is a wasteful number, since it uses less digits than its factorization.

68660692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1071 (or 1069 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 43.

The square root of 68660692 is about 8286.1747507520. The cubic root of 68660692 is about 409.4831719040.

The spelling of 68660692 in words is "sixty-eight million, six hundred sixty thousand, six hundred ninety-two".

Divisors: 1 2 4 71 142 284 419 577 838 1154 1676 2308 29749 40967 59498 81934 118996 163868 241763 483526 967052 17165173 34330346 68660692