56672739 has 12 divisors (see below), whose sum is σ = 81932656. Its totient is φ = 37748592.

The previous prime is 56672723. The next prime is 56672767. The reversal of 56672739 is 93727665.

It is not a de Polignac number, because 56672739 - 2⁴ = 56672723 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56672694 and 56672703.

It is not an unprimeable number, because it can be changed into a prime (56672639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12402 + ... + 16344.

Almost surely, 2^56672739 is an apocalyptic number.

56672739 is a deficient number, since it is larger than the sum of its proper divisors (25259917).

56672739 is a wasteful number, since it uses less digits than its factorization.

56672739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546 (or 5543 counting only the distinct ones).

The product of its digits is 476280, while the sum is 45.

The square root of 56672739 is about 7528.1298474455. The cubic root of 56672739 is about 384.1121701930.

The spelling of 56672739 in words is "fifty-six million, six hundred seventy-two thousand, seven hundred thirty-nine".