56647387 has 4 divisors (see below), whose sum is σ = 56739816. Its totient is φ = 56554960.

The previous prime is 56647373. The next prime is 56647391. The reversal of 56647387 is 78374665.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56647387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56647397) 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, 45289 + ... + 46522.

It is an arithmetic number, because the mean of its divisors is an integer number (14184954).

Almost surely, 2^56647387 is an apocalyptic number.

56647387 is a deficient number, since it is larger than the sum of its proper divisors (92429).

56647387 is an equidigital number, since it uses as much as digits as its factorization.

56647387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92428.

The product of its digits is 846720, while the sum is 46.

The square root of 56647387 is about 7526.4458411657. The cubic root of 56647387 is about 384.0548853659.

The spelling of 56647387 in words is "fifty-six million, six hundred forty-seven thousand, three hundred eighty-seven".