68680806 has 32 divisors (see below), whose sum is σ = 147218688. Its totient is φ = 21304800.

The previous prime is 68680789. The next prime is 68680813. The reversal of 68680806 is 60808686.

It is a super-2 number, since 2×68680806² = 9434106225619272, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1620 + ... + 11831.

It is an arithmetic number, because the mean of its divisors is an integer number (4600584).

Almost surely, 2^68680806 is an apocalyptic number.

68680806 is an abundant number, since it is smaller than the sum of its proper divisors (78537882).

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

68680806 is a wasteful number, since it uses less digits than its factorization.

68680806 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13516.

The product of its (nonzero) digits is 110592, while the sum is 42.

The square root of 68680806 is about 8287.3883702889. The cubic root of 68680806 is about 409.5231537341.

The spelling of 68680806 in words is "sixty-eight million, six hundred eighty thousand, eight hundred six".