676776491 has 4 divisors (see below), whose sum is σ = 676830000. Its totient is φ = 676722984.

The previous prime is 676776481. The next prime is 676776493. The reversal of 676776491 is 194677676.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 676776491 - 2⁶ = 676776427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (676776493) 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, 4010 + ... + 37008.

It is an arithmetic number, because the mean of its divisors is an integer number (169207500).

Almost surely, 2^676776491 is an apocalyptic number.

676776491 is a deficient number, since it is larger than the sum of its proper divisors (53509).

676776491 is a wasteful number, since it uses less digits than its factorization.

676776491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53508.

The product of its digits is 2667168, while the sum is 53.

The square root of 676776491 is about 26014.9282336123. The cubic root of 676776491 is about 877.9742015863.

The spelling of 676776491 in words is "six hundred seventy-six million, seven hundred seventy-six thousand, four hundred ninety-one".