56620739 has 8 divisors (see below), whose sum is σ = 64945248. Its totient is φ = 48355200.

The previous prime is 56620709. The next prime is 56620747. The reversal of 56620739 is 93702665.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56620739 is a prime.

It is a super-2 number, since 2×56620739² = 6411816169812242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56620709) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12662 + ... + 16539.

It is an arithmetic number, because the mean of its divisors is an integer number (8118156).

Almost surely, 2^56620739 is an apocalyptic number.

56620739 is a deficient number, since it is larger than the sum of its proper divisors (8324509).

56620739 is a wasteful number, since it uses less digits than its factorization.

56620739 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29485.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 56620739 is about 7524.6753418337. The cubic root of 56620739 is about 383.9946536980.

The spelling of 56620739 in words is "fifty-six million, six hundred twenty thousand, seven hundred thirty-nine".