677983666 has 32 divisors (see below), whose sum is σ = 1059410880. Its totient is φ = 325188864.

The previous prime is 677983651. The next prime is 677983699. The reversal of 677983666 is 666389776.

It is a self number, because there is not a number n which added to its sum of digits gives 677983666.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2165926 + ... + 2166238.

It is an arithmetic number, because the mean of its divisors is an integer number (33106590).

Almost surely, 2^677983666 is an apocalyptic number.

677983666 is a deficient number, since it is larger than the sum of its proper divisors (381427214).

677983666 is a wasteful number, since it uses less digits than its factorization.

677983666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 730.

The product of its digits is 13716864, while the sum is 58.

The square root of 677983666 is about 26038.1194789486. The cubic root of 677983666 is about 878.4959095049.

The spelling of 677983666 in words is "six hundred seventy-seven million, nine hundred eighty-three thousand, six hundred sixty-six".