2015998 has 8 divisors (see below), whose sum is σ = 3048192. Its totient is φ = 999936.

The previous prime is 2015977. The next prime is 2015999. The reversal of 2015998 is 8995102.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2015999) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3715 + ... + 4222.

It is an arithmetic number, because the mean of its divisors is an integer number (381024).

2^2015998 is an apocalyptic number.

2015998 is a deficient number, since it is larger than the sum of its proper divisors (1032194).

2015998 is a wasteful number, since it uses less digits than its factorization.

2015998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8066.

The product of its (nonzero) digits is 6480, while the sum is 34.

The square root of 2015998 is about 1419.8584436485. The cubic root of 2015998 is about 126.3271501782.

The spelling of 2015998 in words is "two million, fifteen thousand, nine hundred ninety-eight".