677681166 has 32 divisors (see below), whose sum is σ = 1436222880. Its totient is φ = 212438016.

The previous prime is 677681153. The next prime is 677681219. The reversal of 677681166 is 661186776.

It is a super-2 number, since 2×677681166² = 918503525502239112, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 216420 + ... + 219528.

It is an arithmetic number, because the mean of its divisors is an integer number (44881965).

Almost surely, 2^677681166 is an apocalyptic number.

677681166 is an abundant number, since it is smaller than the sum of its proper divisors (758541714).

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

677681166 is a wasteful number, since it uses less digits than its factorization.

677681166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5268.

The product of its digits is 508032, while the sum is 48.

The square root of 677681166 is about 26032.3100396411. The cubic root of 677681166 is about 878.3652354888.

The spelling of 677681166 in words is "six hundred seventy-seven million, six hundred eighty-one thousand, one hundred sixty-six".