679345887 has 8 divisors (see below), whose sum is σ = 988139520. Its totient is φ = 411724760.

The previous prime is 679345861. The next prime is 679345903. The reversal of 679345887 is 788543976.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 679345887 - 2²⁰ = 678297311 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679345847) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10293087 + ... + 10293152.

It is an arithmetic number, because the mean of its divisors is an integer number (123517440).

Almost surely, 2^679345887 is an apocalyptic number.

679345887 is a deficient number, since it is larger than the sum of its proper divisors (308793633).

679345887 is a wasteful number, since it uses less digits than its factorization.

679345887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20586253.

The product of its digits is 10160640, while the sum is 57.

The square root of 679345887 is about 26064.2645589704. The cubic root of 679345887 is about 879.0838808906.

The spelling of 679345887 in words is "six hundred seventy-nine million, three hundred forty-five thousand, eight hundred eighty-seven".