677788386 has 16 divisors (see below), whose sum is σ = 1478811168. Its totient is φ = 205390400.

The previous prime is 677788339. The next prime is 677788409. The reversal of 677788386 is 683887776.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5134695 + ... + 5134826.

It is an arithmetic number, because the mean of its divisors is an integer number (92425698).

Almost surely, 2^677788386 is an apocalyptic number.

677788386 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

677788386 is an abundant number, since it is smaller than the sum of its proper divisors (801022782).

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

677788386 is a wasteful number, since it uses less digits than its factorization.

677788386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10269537.

The product of its digits is 18966528, while the sum is 60.

The square root of 677788386 is about 26034.3693221096. The cubic root of 677788386 is about 878.4115568559.

The spelling of 677788386 in words is "six hundred seventy-seven million, seven hundred eighty-eight thousand, three hundred eighty-six".