677645597 has 4 divisors (see below), whose sum is σ = 677710080. Its totient is φ = 677581116.

The previous prime is 677645587. The next prime is 677645599. The reversal of 677645597 is 795546776.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 677645597 - 2⁸ = 677645341 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677645599) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12413 + ... + 38850.

It is an arithmetic number, because the mean of its divisors is an integer number (169427520).

Almost surely, 2^677645597 is an apocalyptic number.

It is an amenable number.

677645597 is a deficient number, since it is larger than the sum of its proper divisors (64483).

677645597 is a wasteful number, since it uses less digits than its factorization.

677645597 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64482.

The product of its digits is 11113200, while the sum is 56.

The square root of 677645597 is about 26031.6268604173. The cubic root of 677645597 is about 878.3498678296.

The spelling of 677645597 in words is "six hundred seventy-seven million, six hundred forty-five thousand, five hundred ninety-seven".