56664037 has 2 divisors, whose sum is σ = 56664038. Its totient is φ = 56664036.

The previous prime is 56663993. The next prime is 56664053. The reversal of 56664037 is 73046665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56565441 + 98596 = 7521^2 + 314^2 .

It is a cyclic number.

It is not a de Polignac number, because 56664037 - 2¹⁵ = 56631269 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 56663987 and 56664005.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56664437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28332018 + 28332019.

It is an arithmetic number, because the mean of its divisors is an integer number (28332019).

Almost surely, 2^56664037 is an apocalyptic number.

It is an amenable number.

56664037 is a deficient number, since it is larger than the sum of its proper divisors (1).

56664037 is an equidigital number, since it uses as much as digits as its factorization.

56664037 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 37.

The square root of 56664037 is about 7527.5518596686. The cubic root of 56664037 is about 384.0925092693.

The spelling of 56664037 in words is "fifty-six million, six hundred sixty-four thousand, thirty-seven".