677401915 has 4 divisors (see below), whose sum is σ = 812882304. Its totient is φ = 541921528.

The previous prime is 677401861. The next prime is 677401931. The reversal of 677401915 is 519104776.

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 677401915 - 2⁷ = 677401787 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is an unprimeable number.

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, 67740187 + ... + 67740196.

It is an arithmetic number, because the mean of its divisors is an integer number (203220576).

Almost surely, 2^677401915 is an apocalyptic number.

677401915 is a deficient number, since it is larger than the sum of its proper divisors (135480389).

677401915 is a wasteful number, since it uses less digits than its factorization.

677401915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135480388.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 677401915 is about 26026.9459406977. The cubic root of 677401915 is about 878.2445700581.

The spelling of 677401915 in words is "six hundred seventy-seven million, four hundred one thousand, nine hundred fifteen".