977570137 has 2 divisors, whose sum is σ = 977570138. Its totient is φ = 977570136.

The previous prime is 977570131. The next prime is 977570147. The reversal of 977570137 is 731075779.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 824206681 + 153363456 = 28709^2 + 12384^2 .

It is a cyclic number.

It is not a de Polignac number, because 977570137 - 2³ = 977570129 is a prime.

It is not a weakly prime, because it can be changed into another prime (977570131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 488785068 + 488785069.

It is an arithmetic number, because the mean of its divisors is an integer number (488785069).

Almost surely, 2^977570137 is an apocalyptic number.

It is an amenable number.

977570137 is a deficient number, since it is larger than the sum of its proper divisors (1).

977570137 is an equidigital number, since it uses as much as digits as its factorization.

977570137 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324135, while the sum is 46.

The square root of 977570137 is about 31266.1180353430. The cubic root of 977570137 is about 992.4667719779.

The spelling of 977570137 in words is "nine hundred seventy-seven million, five hundred seventy thousand, one hundred thirty-seven".