677647138 has 16 divisors (see below), whose sum is σ = 1167523200. Its totient is φ = 288959616.

The previous prime is 677647123. The next prime is 677647163. The reversal of 677647138 is 831746776.

It is a junction number, because it is equal to n+sod(n) for n = 677647091 and 677647100.

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, 118831 + ... + 124402.

It is an arithmetic number, because the mean of its divisors is an integer number (72970200).

Almost surely, 2^677647138 is an apocalyptic number.

677647138 is a deficient number, since it is larger than the sum of its proper divisors (489876062).

677647138 is a wasteful number, since it uses less digits than its factorization.

677647138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 243441.

The product of its digits is 1185408, while the sum is 49.

The square root of 677647138 is about 26031.6564590116. The cubic root of 677647138 is about 878.3505336329.

The spelling of 677647138 in words is "six hundred seventy-seven million, six hundred forty-seven thousand, one hundred thirty-eight".