676961979 has 4 divisors (see below), whose sum is σ = 902615976. Its totient is φ = 451307984.

The previous prime is 676961969. The next prime is 676962007. The reversal of 676961979 is 979169676.

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 676961979 - 2⁷ = 676961851 is a prime.

It is not an unprimeable number, because it can be changed into a prime (676961939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 112826994 + ... + 112826999.

It is an arithmetic number, because the mean of its divisors is an integer number (225653994).

Almost surely, 2^676961979 is an apocalyptic number.

676961979 is a deficient number, since it is larger than the sum of its proper divisors (225653997).

676961979 is a wasteful number, since it uses less digits than its factorization.

676961979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225653996.

The product of its digits is 7715736, while the sum is 60.

The square root of 676961979 is about 26018.4930193891. The cubic root of 676961979 is about 878.0544047282.

It can be divided in two parts, 67 and 6961979, that added together give a triangular number (6962046 = T₃₇₃₁).

The spelling of 676961979 in words is "six hundred seventy-six million, nine hundred sixty-one thousand, nine hundred seventy-nine".