56947663 has 2 divisors, whose sum is σ = 56947664. Its totient is φ = 56947662.

The previous prime is 56947613. The next prime is 56947679. The reversal of 56947663 is 36674965.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56947663 - 2¹³ = 56939471 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56947613) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28473831 + 28473832.

It is an arithmetic number, because the mean of its divisors is an integer number (28473832).

Almost surely, 2^56947663 is an apocalyptic number.

56947663 is a deficient number, since it is larger than the sum of its proper divisors (1).

56947663 is an equidigital number, since it uses as much as digits as its factorization.

56947663 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 816480, while the sum is 46.

The square root of 56947663 is about 7546.3675367689. The cubic root of 56947663 is about 384.7322881672.

The spelling of 56947663 in words is "fifty-six million, nine hundred forty-seven thousand, six hundred sixty-three".