56996647 has 4 divisors (see below), whose sum is σ = 57092400. Its totient is φ = 56900896.

The previous prime is 56996603. The next prime is 56996663. The reversal of 56996647 is 74669965.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74669965 = 5 ⋅14933993.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56996647 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 56996594 and 56996603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56996747) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46978 + ... + 48175.

It is an arithmetic number, because the mean of its divisors is an integer number (14273100).

Almost surely, 2^56996647 is an apocalyptic number.

56996647 is a deficient number, since it is larger than the sum of its proper divisors (95753).

56996647 is an equidigital number, since it uses as much as digits as its factorization.

56996647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95752.

The product of its digits is 2449440, while the sum is 52.

The square root of 56996647 is about 7549.6123741554. The cubic root of 56996647 is about 384.8425667667.

The spelling of 56996647 in words is "fifty-six million, nine hundred ninety-six thousand, six hundred forty-seven".