679886647 has 16 divisors (see below), whose sum is σ = 775261440. Its totient is φ = 590198400.

The previous prime is 679886629. The next prime is 679886653. The reversal of 679886647 is 746688976.

It is not a de Polignac number, because 679886647 - 2¹¹ = 679884599 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 (679886617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172879 + ... + 176767.

It is an arithmetic number, because the mean of its divisors is an integer number (48453840).

Almost surely, 2^679886647 is an apocalyptic number.

679886647 is a deficient number, since it is larger than the sum of its proper divisors (95374793).

679886647 is a wasteful number, since it uses less digits than its factorization.

679886647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4614.

The product of its digits is 24385536, while the sum is 61.

The square root of 679886647 is about 26074.6360856676. The cubic root of 679886647 is about 879.3170695758.

The spelling of 679886647 in words is "six hundred seventy-nine million, eight hundred eighty-six thousand, six hundred forty-seven".