677438961 has 8 divisors (see below), whose sum is σ = 903385824. Its totient is φ = 451559040.

The previous prime is 677438953. The next prime is 677438999. The reversal of 677438961 is 169834776.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 677438961 - 2³ = 677438953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (677438261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16065 + ... + 40161.

It is an arithmetic number, because the mean of its divisors is an integer number (112923228).

Almost surely, 2^677438961 is an apocalyptic number.

It is an amenable number.

677438961 is a deficient number, since it is larger than the sum of its proper divisors (225946863).

677438961 is a wasteful number, since it uses less digits than its factorization.

677438961 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33471.

The product of its digits is 1524096, while the sum is 51.

The square root of 677438961 is about 26027.6576164664. The cubic root of 677438961 is about 878.2605796847.

The spelling of 677438961 in words is "six hundred seventy-seven million, four hundred thirty-eight thousand, nine hundred sixty-one".