68731404 has 24 divisors (see below), whose sum is σ = 183283968. Its totient is φ = 19637520.

The previous prime is 68731349. The next prime is 68731423. The reversal of 68731404 is 40413786.

It is a super-2 number, since 2×68731404² = 9448011791622432, which contains 22 as substring.

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, 409032 + ... + 409199.

It is an arithmetic number, because the mean of its divisors is an integer number (7636832).

Almost surely, 2^68731404 is an apocalyptic number.

It is an amenable number.

68731404 is an abundant number, since it is smaller than the sum of its proper divisors (114552564).

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

68731404 is a wasteful number, since it uses less digits than its factorization.

68731404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 818245 (or 818243 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 68731404 is about 8290.4405190557. The cubic root of 68731404 is about 409.6236959736.

The spelling of 68731404 in words is "sixty-eight million, seven hundred thirty-one thousand, four hundred four".