68812580 has 24 divisors (see below), whose sum is σ = 145312440. Its totient is φ = 27371520.

The previous prime is 68812577. The next prime is 68812607. The reversal of 68812580 is 8521886.

It can be written as a sum of positive squares in 4 ways, for example, as 1965604 + 66846976 = 1402^2 + 8176^2 .

It is a Smith number, since the sum of its digits (38) 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, 5885 + ... + 13124.

It is an arithmetic number, because the mean of its divisors is an integer number (6054685).

Almost surely, 2^68812580 is an apocalyptic number.

It is an amenable number.

68812580 is an abundant number, since it is smaller than the sum of its proper divisors (76499860).

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

68812580 is a wasteful number, since it uses less digits than its factorization.

68812580 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19199 (or 19197 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 68812580 is about 8295.3348335073. The cubic root of 68812580 is about 409.7848960901.

The spelling of 68812580 in words is "sixty-eight million, eight hundred twelve thousand, five hundred eighty".