676926639 has 40 divisors (see below), whose sum is σ = 1058682240. Its totient is φ = 430231824.

The previous prime is 676926629. The next prime is 676926641. The reversal of 676926639 is 936629676.

It is a happy number.

It is not a de Polignac number, because 676926639 - 2²⁵ = 643372207 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (676926629) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 1093272 + ... + 1093890.

It is an arithmetic number, because the mean of its divisors is an integer number (26467056).

Almost surely, 2^676926639 is an apocalyptic number.

676926639 is a gapful number since it is divisible by the number (69) formed by its first and last digit.

676926639 is a deficient number, since it is larger than the sum of its proper divisors (381755601).

676926639 is a wasteful number, since it uses less digits than its factorization.

676926639 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1232 counting only the distinct ones).

The product of its digits is 4408992, while the sum is 54.

The square root of 676926639 is about 26017.8138781874. The cubic root of 676926639 is about 878.0391251982.

The spelling of 676926639 in words is "six hundred seventy-six million, nine hundred twenty-six thousand, six hundred thirty-nine".