90636998 has 8 divisors (see below), whose sum is σ = 136868400. Its totient is φ = 45014200.

The previous prime is 90636989. The next prime is 90637003. The reversal of 90636998 is 89963609.

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

It is a congruent number.

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, 151778 + ... + 152373.

It is an arithmetic number, because the mean of its divisors is an integer number (17108550).

Almost surely, 2^90636998 is an apocalyptic number.

90636998 is a deficient number, since it is larger than the sum of its proper divisors (46231402).

90636998 is a wasteful number, since it uses less digits than its factorization.

90636998 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 304302.

The product of its (nonzero) digits is 629856, while the sum is 50.

The square root of 90636998 is about 9520.3465273067. The cubic root of 90636998 is about 449.1952662816.

It can be divided in two parts, 9063 and 6998, that added together give a palindrome (16061).

The spelling of 90636998 in words is "ninety million, six hundred thirty-six thousand, nine hundred ninety-eight".