13987698 has 8 divisors (see below), whose sum is σ = 27975408. Its totient is φ = 4662564.

The previous prime is 13987681. The next prime is 13987723. The reversal of 13987698 is 89678931.

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

13987698 is an admirable number.

It is a self number, because there is not a number n which added to its sum of digits gives 13987698.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1165636 + ... + 1165647.

It is an arithmetic number, because the mean of its divisors is an integer number (3496926).

Almost surely, 2^13987698 is an apocalyptic number.

13987698 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13987698 is a wasteful number, since it uses less digits than its factorization.

13987698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2331288.

The product of its digits is 653184, while the sum is 51.

The square root of 13987698 is about 3740.0131015813. The cubic root of 13987698 is about 240.9436115154.

The spelling of 13987698 in words is "thirteen million, nine hundred eighty-seven thousand, six hundred ninety-eight".