979887687 has 16 divisors (see below), whose sum is σ = 1360220640. Its totient is φ = 626890752.

The previous prime is 979887683. The next prime is 979887709. The reversal of 979887687 is 786788979.

It is not a de Polignac number, because 979887687 - 2² = 979887683 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979887683) 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, 52362 + ... + 68567.

It is an arithmetic number, because the mean of its divisors is an integer number (85013790).

Almost surely, 2^979887687 is an apocalyptic number.

979887687 is a deficient number, since it is larger than the sum of its proper divisors (380332953).

979887687 is a wasteful number, since it uses less digits than its factorization.

979887687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 121042.

The product of its digits is 85349376, while the sum is 69.

The square root of 979887687 is about 31303.1577800068. The cubic root of 979887687 is about 993.2504416239.

The spelling of 979887687 in words is "nine hundred seventy-nine million, eight hundred eighty-seven thousand, six hundred eighty-seven".