677591964 has 72 divisors (see below), whose sum is σ = 1970562048. Its totient is φ = 192304800.

The previous prime is 677591911. The next prime is 677591987. The reversal of 677591964 is 469195776.

677591964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-3 number, since 3×677591964³ (a number of 27 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 677591964.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 29149 + ... + 46955.

Almost surely, 2^677591964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 677591964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (985281024).

677591964 is an abundant number, since it is smaller than the sum of its proper divisors (1292970084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

677591964 is a wasteful number, since it uses less digits than its factorization.

677591964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17975 (or 17970 counting only the distinct ones).

The product of its digits is 2857680, while the sum is 54.

The square root of 677591964 is about 26030.5966892809. The cubic root of 677591964 is about 878.3266945654.

The spelling of 677591964 in words is "six hundred seventy-seven million, five hundred ninety-one thousand, nine hundred sixty-four".