139612568 has 16 divisors (see below), whose sum is σ = 277172280. Its totient is φ = 65699968.

The previous prime is 139612549. The next prime is 139612601. The reversal of 139612568 is 865216931.

It is a congruent number.

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, 513146 + ... + 513417.

Almost surely, 2^139612568 is an apocalyptic number.

It is an amenable number.

139612568 is a deficient number, since it is larger than the sum of its proper divisors (137559712).

139612568 is a wasteful number, since it uses less digits than its factorization.

139612568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1026586 (or 1026582 counting only the distinct ones).

The product of its digits is 77760, while the sum is 41.

The square root of 139612568 is about 11815.7762334939. The cubic root of 139612568 is about 518.7699823338.

The spelling of 139612568 in words is "one hundred thirty-nine million, six hundred twelve thousand, five hundred sixty-eight".