677972931 has 4 divisors (see below), whose sum is σ = 903963912. Its totient is φ = 451981952.

The previous prime is 677972921. The next prime is 677972947. The reversal of 677972931 is 139279776.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 677972931 - 2⁵ = 677972899 is a prime.

It is a super-2 number, since 2×677972931² = 919294590337461522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (677972921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112995486 + ... + 112995491.

It is an arithmetic number, because the mean of its divisors is an integer number (225990978).

Almost surely, 2^677972931 is an apocalyptic number.

677972931 is a deficient number, since it is larger than the sum of its proper divisors (225990981).

677972931 is a wasteful number, since it uses less digits than its factorization.

677972931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225990980.

The product of its digits is 1000188, while the sum is 51.

The square root of 677972931 is about 26037.9133380538. The cubic root of 677972931 is about 878.4912728625.

The spelling of 677972931 in words is "six hundred seventy-seven million, nine hundred seventy-two thousand, nine hundred thirty-one".