90998515 has 8 divisors (see below), whose sum is σ = 110694528. Its totient is φ = 71801280.

The previous prime is 90998507. The next prime is 90998539. The reversal of 90998515 is 51589909.

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

It is not a de Polignac number, because 90998515 - 2³ = 90998507 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124291 + ... + 125020.

It is an arithmetic number, because the mean of its divisors is an integer number (13836816).

Almost surely, 2^90998515 is an apocalyptic number.

90998515 is a deficient number, since it is larger than the sum of its proper divisors (19696013).

90998515 is a wasteful number, since it uses less digits than its factorization.

90998515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249389.

The product of its (nonzero) digits is 145800, while the sum is 46.

The square root of 90998515 is about 9539.3141787028. The cubic root of 90998515 is about 449.7916978318.

The spelling of 90998515 in words is "ninety million, nine hundred ninety-eight thousand, five hundred fifteen".