677479974775 has 12 divisors (see below), whose sum is σ = 845425970872. Its totient is φ = 538531849440.

The previous prime is 677479974713. The next prime is 677479974779. The reversal of 677479974775 is 577479974776.

It is not a de Polignac number, because 677479974775 - 2⁹ = 677479974263 is a prime.

It is a super-2 number, since 2×677479974775² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 677479974695 and 677479974704.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677479974779) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 86299257 + ... + 86307106.

Almost surely, 2^677479974775 is an apocalyptic number.

677479974775 is a deficient number, since it is larger than the sum of its proper divisors (167945996097).

677479974775 is a wasteful number, since it uses less digits than its factorization.

677479974775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 172606530 (or 172606525 counting only the distinct ones).

The product of its digits is 4574193120, while the sum is 79.

Subtracting from 677479974775 its reverse (577479974776), we obtain a palindrome (99999999999).

The spelling of 677479974775 in words is "six hundred seventy-seven billion, four hundred seventy-nine million, nine hundred seventy-four thousand, seven hundred seventy-five".