68680692 has 18 divisors (see below), whose sum is σ = 173609618. Its totient is φ = 22893552.

The previous prime is 68680681. The next prime is 68680721. The reversal of 68680692 is 29608686.

It can be written as a sum of positive squares in only one way, i.e., 47941776 + 20738916 = 6924^2 + 4554^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 953863 + ... + 953934.

Almost surely, 2^68680692 is an apocalyptic number.

It is an amenable number.

68680692 is an abundant number, since it is smaller than the sum of its proper divisors (104928926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68680692 is a wasteful number, since it uses less digits than its factorization.

68680692 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1907807 (or 1907802 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 68680692 is about 8287.3814923654. The cubic root of 68680692 is about 409.5229271513.

The spelling of 68680692 in words is "sixty-eight million, six hundred eighty thousand, six hundred ninety-two".