679617587 has 16 divisors (see below), whose sum is σ = 756138240. Its totient is φ = 605676000.

The previous prime is 679617577. The next prime is 679617611. The reversal of 679617587 is 785716976.

It is a cyclic number.

It is not a de Polignac number, because 679617587 - 2²² = 675423283 is a prime.

It is not an unprimeable number, because it can be changed into a prime (679617527) 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, 111464 + ... + 117402.

It is an arithmetic number, because the mean of its divisors is an integer number (47258640).

Almost surely, 2^679617587 is an apocalyptic number.

679617587 is a deficient number, since it is larger than the sum of its proper divisors (76520653).

679617587 is a wasteful number, since it uses less digits than its factorization.

679617587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6154.

The product of its digits is 4445280, while the sum is 56.

The square root of 679617587 is about 26069.4761550745. The cubic root of 679617587 is about 879.2010599105.

The spelling of 679617587 in words is "six hundred seventy-nine million, six hundred seventeen thousand, five hundred eighty-seven".