679396887 has 24 divisors (see below), whose sum is σ = 1057833504. Its totient is φ = 417697344.

The previous prime is 679396871. The next prime is 679396901. The reversal of 679396887 is 788693976.

It is a happy number.

It is not a de Polignac number, because 679396887 - 2⁴ = 679396871 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (679396807) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 167293 + ... + 171305.

It is an arithmetic number, because the mean of its divisors is an integer number (44076396).

Almost surely, 2^679396887 is an apocalyptic number.

679396887 is a deficient number, since it is larger than the sum of its proper divisors (378436617).

679396887 is a wasteful number, since it uses less digits than its factorization.

679396887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5479 (or 5476 counting only the distinct ones).

The product of its digits is 27433728, while the sum is 63.

The square root of 679396887 is about 26065.2428916364. The cubic root of 679396887 is about 879.1058785979.

The spelling of 679396887 in words is "six hundred seventy-nine million, three hundred ninety-six thousand, eight hundred eighty-seven".