56943647 has 2 divisors, whose sum is σ = 56943648. Its totient is φ = 56943646.

The previous prime is 56943643. The next prime is 56943697. The reversal of 56943647 is 74634965.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56943647 - 2² = 56943643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56943598 and 56943607.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56943641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28471823 + 28471824.

It is an arithmetic number, because the mean of its divisors is an integer number (28471824).

Almost surely, 2^56943647 is an apocalyptic number.

56943647 is a deficient number, since it is larger than the sum of its proper divisors (1).

56943647 is an equidigital number, since it uses as much as digits as its factorization.

56943647 is an evil number, because the sum of its binary digits is even.

The product of its digits is 544320, while the sum is 44.

The square root of 56943647 is about 7546.1014437920. The cubic root of 56943647 is about 384.7232440666.

The spelling of 56943647 in words is "fifty-six million, nine hundred forty-three thousand, six hundred forty-seven".