677368391 has 4 divisors (see below), whose sum is σ = 774135312. Its totient is φ = 580601472.

The previous prime is 677368327. The next prime is 677368397. The reversal of 677368391 is 193863776.

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 677368391 - 2⁶ = 677368327 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (677368397) 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, 48383450 + ... + 48383463.

It is an arithmetic number, because the mean of its divisors is an integer number (193533828).

Almost surely, 2^677368391 is an apocalyptic number.

677368391 is a deficient number, since it is larger than the sum of its proper divisors (96766921).

677368391 is an equidigital number, since it uses as much as digits as its factorization.

677368391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96766920.

The product of its digits is 1143072, while the sum is 50.

The square root of 677368391 is about 26026.3019078777. The cubic root of 677368391 is about 878.2300819794.

The spelling of 677368391 in words is "six hundred seventy-seven million, three hundred sixty-eight thousand, three hundred ninety-one".