68805740 has 24 divisors (see below), whose sum is σ = 149154432. Its totient is φ = 26634240.

The previous prime is 68805731. The next prime is 68805757. The reversal of 68805740 is 4750886.

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 a junction number, because it is equal to n+sod(n) for n = 68805694 and 68805703.

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, 54869 + ... + 56108.

It is an arithmetic number, because the mean of its divisors is an integer number (6214768).

Almost surely, 2^68805740 is an apocalyptic number.

It is an amenable number.

68805740 is an abundant number, since it is smaller than the sum of its proper divisors (80348692).

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

68805740 is a wasteful number, since it uses less digits than its factorization.

68805740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 111017 (or 111015 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 68805740 is about 8294.9225433394. The cubic root of 68805740 is about 409.7713180420.

The spelling of 68805740 in words is "sixty-eight million, eight hundred five thousand, seven hundred forty".