56663447 has 2 divisors, whose sum is σ = 56663448. Its totient is φ = 56663446.

The previous prime is 56663437. The next prime is 56663471. The reversal of 56663447 is 74436665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56663447 - 2¹⁶ = 56597911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56663437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28331723 + 28331724.

It is an arithmetic number, because the mean of its divisors is an integer number (28331724).

Almost surely, 2^56663447 is an apocalyptic number.

56663447 is a deficient number, since it is larger than the sum of its proper divisors (1).

56663447 is an equidigital number, since it uses as much as digits as its factorization.

56663447 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 41.

The square root of 56663447 is about 7527.5126701986. The cubic root of 56663447 is about 384.0911761758.

The spelling of 56663447 in words is "fifty-six million, six hundred sixty-three thousand, four hundred forty-seven".