13615998 has 16 divisors (see below), whose sum is σ = 29707776. Its totient is φ = 4126040.

The previous prime is 13615991. The next prime is 13615999. The reversal of 13615998 is 89951631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13615991) 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, 103086 + ... + 103217.

It is an arithmetic number, because the mean of its divisors is an integer number (1856736).

Almost surely, 2^13615998 is an apocalyptic number.

13615998 is an abundant number, since it is smaller than the sum of its proper divisors (16091778).

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

13615998 is a wasteful number, since it uses less digits than its factorization.

13615998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 206319.

The product of its digits is 58320, while the sum is 42.

The square root of 13615998 is about 3689.9861788359. The cubic root of 13615998 is about 238.7901965342.

The spelling of 13615998 in words is "thirteen million, six hundred fifteen thousand, nine hundred ninety-eight".