657059047 has 2 divisors, whose sum is σ = 657059048. Its totient is φ = 657059046.

The previous prime is 657058933. The next prime is 657059077. The reversal of 657059047 is 740950756.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 657059047 - 2²³ = 648670439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 657058994 and 657059012.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (657059077) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328529523 + 328529524.

It is an arithmetic number, because the mean of its divisors is an integer number (328529524).

Almost surely, 2^657059047 is an apocalyptic number.

657059047 is a deficient number, since it is larger than the sum of its proper divisors (1).

657059047 is an equidigital number, since it uses as much as digits as its factorization.

657059047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 264600, while the sum is 43.

The square root of 657059047 is about 25633.1630315106. The cubic root of 657059047 is about 869.3636280830.

The spelling of 657059047 in words is "six hundred fifty-seven million, fifty-nine thousand, forty-seven".