677880491 has 4 divisors (see below), whose sum is σ = 717755832. Its totient is φ = 638005152.

The previous prime is 677880487. The next prime is 677880493. The reversal of 677880491 is 194088776.

677880491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 677880491 - 2² = 677880487 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (677880493) 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, 19937645 + ... + 19937678.

It is an arithmetic number, because the mean of its divisors is an integer number (179438958).

Almost surely, 2^677880491 is an apocalyptic number.

677880491 is a deficient number, since it is larger than the sum of its proper divisors (39875341).

677880491 is a wasteful number, since it uses less digits than its factorization.

677880491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39875340.

The product of its (nonzero) digits is 677376, while the sum is 50.

The square root of 677880491 is about 26036.1381737000. The cubic root of 677880491 is about 878.4513443144.

The spelling of 677880491 in words is "six hundred seventy-seven million, eight hundred eighty thousand, four hundred ninety-one".