657677613 has 4 divisors (see below), whose sum is σ = 876903488. Its totient is φ = 438451740.

The previous prime is 657677611. The next prime is 657677651. The reversal of 657677613 is 316776756.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 657677613 - 2¹ = 657677611 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (657677611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109612933 + ... + 109612938.

It is an arithmetic number, because the mean of its divisors is an integer number (219225872).

Almost surely, 2^657677613 is an apocalyptic number.

It is an amenable number.

657677613 is a deficient number, since it is larger than the sum of its proper divisors (219225875).

657677613 is a wasteful number, since it uses less digits than its factorization.

657677613 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 219225874.

The product of its digits is 1111320, while the sum is 48.

The square root of 657677613 is about 25645.2259299855. The cubic root of 657677613 is about 869.6363535055.

The spelling of 657677613 in words is "six hundred fifty-seven million, six hundred seventy-seven thousand, six hundred thirteen".