657052939 has 2 divisors, whose sum is σ = 657052940. Its totient is φ = 657052938.

The previous prime is 657052933. The next prime is 657053039. The reversal of 657052939 is 939250756.

It is a happy number.

657052939 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 657052939 - 2³ = 657052931 is a prime.

It is not a weakly prime, because it can be changed into another prime (657052931) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328526469 + 328526470.

It is an arithmetic number, because the mean of its divisors is an integer number (328526470).

Almost surely, 2^657052939 is an apocalyptic number.

657052939 is a deficient number, since it is larger than the sum of its proper divisors (1).

657052939 is an equidigital number, since it uses as much as digits as its factorization.

657052939 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 510300, while the sum is 46.

The square root of 657052939 is about 25633.0438886996. The cubic root of 657052939 is about 869.3609342158.

It can be divided in two parts, 65705 and 2939, that added together give a square (68644 = 262²).

The spelling of 657052939 in words is "six hundred fifty-seven million, fifty-two thousand, nine hundred thirty-nine".