68039724 has 12 divisors (see below), whose sum is σ = 158759384. Its totient is φ = 22679904.

The previous prime is 68039711. The next prime is 68039731. The reversal of 68039724 is 42793086.

It is a tau number, because it is divible by the number of its divisors (12).

It is a plaindrome in base 13.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2834977 + ... + 2835000.

Almost surely, 2^68039724 is an apocalyptic number.

It is an amenable number.

68039724 is an abundant number, since it is smaller than the sum of its proper divisors (90719660).

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

68039724 is a wasteful number, since it uses less digits than its factorization.

68039724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5669984 (or 5669982 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 68039724 is about 8248.6195208653. The cubic root of 68039724 is about 408.2449749490.

It can be divided in two parts, 680 and 39724, that added together give a palindrome (40404).

The spelling of 68039724 in words is "sixty-eight million, thirty-nine thousand, seven hundred twenty-four".