990608501 has 8 divisors (see below), whose sum is σ = 1014087360. Its totient is φ = 967149792.

The previous prime is 990608483. The next prime is 990608527. The reversal of 990608501 is 105806099.

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

It is a cyclic number.

It is not a de Polignac number, because 990608501 - 2¹⁴ = 990592117 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 (990608701) 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, 149801 + ... + 156273.

It is an arithmetic number, because the mean of its divisors is an integer number (126760920).

Almost surely, 2^990608501 is an apocalyptic number.

It is an amenable number.

990608501 is a deficient number, since it is larger than the sum of its proper divisors (23478859).

990608501 is a wasteful number, since it uses less digits than its factorization.

990608501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10075.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 990608501 is about 31473.9336753447. The cubic root of 990608501 is about 996.8596488512.

The spelling of 990608501 in words is "nine hundred ninety million, six hundred eight thousand, five hundred one".