657674473 has 2 divisors, whose sum is σ = 657674474. Its totient is φ = 657674472.

The previous prime is 657674471. The next prime is 657674477. The reversal of 657674473 is 374476756.

657674473 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 can be written as a sum of positive squares in only one way, i.e., 472932009 + 184742464 = 21747^2 + 13592^2 .

It is a cyclic number.

It is not a de Polignac number, because 657674473 - 2¹ = 657674471 is a prime.

Together with 657674471, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (657674471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 328837236 + 328837237.

It is an arithmetic number, because the mean of its divisors is an integer number (328837237).

Almost surely, 2^657674473 is an apocalyptic number.

It is an amenable number.

657674473 is a deficient number, since it is larger than the sum of its proper divisors (1).

657674473 is an equidigital number, since it uses as much as digits as its factorization.

657674473 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2963520, while the sum is 49.

The square root of 657674473 is about 25645.1647099409. The cubic root of 657674473 is about 869.6349695131.

The spelling of 657674473 in words is "six hundred fifty-seven million, six hundred seventy-four thousand, four hundred seventy-three".