677479974777 has 12 divisors (see below), whose sum is σ = 978882683220. Its totient is φ = 451514625408.

The previous prime is 677479974713. The next prime is 677479974779. The reversal of 677479974777 is 777479974776.

677479974777 is a `hidden beast` number, since 6 + 7 + 7 + 479 + 9 + 74 + 7 + 77 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 225222379776 + 452257595001 = 474576^2 + 672501^2 .

It is not a de Polignac number, because 677479974777 - 2⁶ = 677479974713 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 677479974696 and 677479974705.

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

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11526652 + ... + 11585277.

It is an arithmetic number, because the mean of its divisors is an integer number (81573556935).

Almost surely, 2^677479974777 is an apocalyptic number.

It is an amenable number.

677479974777 is a deficient number, since it is larger than the sum of its proper divisors (301402708443).

677479974777 is a wasteful number, since it uses less digits than its factorization.

677479974777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23115192 (or 23115189 counting only the distinct ones).

The product of its digits is 6403870368, while the sum is 81.

Subtracting 677479974777 from its reverse (777479974776), we obtain a palindrome (99999999999).

The spelling of 677479974777 in words is "six hundred seventy-seven billion, four hundred seventy-nine million, nine hundred seventy-four thousand, seven hundred seventy-seven".