677957881 has 4 divisors (see below), whose sum is σ = 683133264. Its totient is φ = 672782500.

The previous prime is 677957857. The next prime is 677957887. The reversal of 677957881 is 188759776.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-677957881 is a prime.

It is a super-2 number, since 2×677957881² = 919253776820020322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677957887) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2587495 + ... + 2587756.

It is an arithmetic number, because the mean of its divisors is an integer number (170783316).

Almost surely, 2^677957881 is an apocalyptic number.

It is an amenable number.

677957881 is a deficient number, since it is larger than the sum of its proper divisors (5175383).

677957881 is a wasteful number, since it uses less digits than its factorization.

677957881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5175382.

The product of its digits is 5927040, while the sum is 58.

The square root of 677957881 is about 26037.6243347968. The cubic root of 677957881 is about 878.4847724105.

The spelling of 677957881 in words is "six hundred seventy-seven million, nine hundred fifty-seven thousand, eight hundred eighty-one".