56660377 has 2 divisors, whose sum is σ = 56660378. Its totient is φ = 56660376.

The previous prime is 56660363. The next prime is 56660381. The reversal of 56660377 is 77306665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38204761 + 18455616 = 6181^2 + 4296^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56660377 is a prime.

It is not a weakly prime, because it can be changed into another prime (56660327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28330188 + 28330189.

It is an arithmetic number, because the mean of its divisors is an integer number (28330189).

Almost surely, 2^56660377 is an apocalyptic number.

It is an amenable number.

56660377 is a deficient number, since it is larger than the sum of its proper divisors (1).

56660377 is an equidigital number, since it uses as much as digits as its factorization.

56660377 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 158760, while the sum is 40.

The square root of 56660377 is about 7527.3087488159. The cubic root of 56660377 is about 384.0842394217.

The spelling of 56660377 in words is "fifty-six million, six hundred sixty thousand, three hundred seventy-seven".