679413977 has 4 divisors (see below), whose sum is σ = 741178896. Its totient is φ = 617649060.

The previous prime is 679413961. The next prime is 679414007. The reversal of 679413977 is 779314976.

679413977 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 679413977 - 2⁴ = 679413961 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (679413937) 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, 30882443 + ... + 30882464.

It is an arithmetic number, because the mean of its divisors is an integer number (185294724).

Almost surely, 2^679413977 is an apocalyptic number.

It is an amenable number.

679413977 is a deficient number, since it is larger than the sum of its proper divisors (61764919).

679413977 is a wasteful number, since it uses less digits than its factorization.

679413977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61764918.

The product of its digits is 2000376, while the sum is 53.

The square root of 679413977 is about 26065.5707207803. The cubic root of 679413977 is about 879.1132497403.

Subtracting 679413977 from its reverse (779314976), we obtain a palindrome (99900999).

The spelling of 679413977 in words is "six hundred seventy-nine million, four hundred thirteen thousand, nine hundred seventy-seven".