987668279 has 12 divisors (see below), whose sum is σ = 1125779400. Its totient is φ = 863707104.

The previous prime is 987668273. The next prime is 987668281. The reversal of 987668279 is 972866789.

It is a happy number.

It is not a de Polignac number, because 987668279 - 2²⁸ = 719232823 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 (987668273) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 150584 + ... + 157005.

It is an arithmetic number, because the mean of its divisors is an integer number (93814950).

Almost surely, 2^987668279 is an apocalyptic number.

987668279 is a deficient number, since it is larger than the sum of its proper divisors (138111121).

987668279 is a wasteful number, since it uses less digits than its factorization.

987668279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 307634 (or 307621 counting only the distinct ones).

The product of its digits is 18289152, while the sum is 62.

The square root of 987668279 is about 31427.1901225674. The cubic root of 987668279 is about 995.8724127978.

The spelling of 987668279 in words is "nine hundred eighty-seven million, six hundred sixty-eight thousand, two hundred seventy-nine".