90898633565 has 32 divisors (see below), whose sum is σ = 116317555200. Its totient is φ = 67954673664.

The previous prime is 90898633561. The next prime is 90898633619. The reversal of 90898633565 is 56533689809.

It is not a de Polignac number, because 90898633565 - 2² = 90898633561 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 90898633498 and 90898633507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90898633561) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 14660336 + ... + 14666534.

It is an arithmetic number, because the mean of its divisors is an integer number (3634923600).

Almost surely, 2^90898633565 is an apocalyptic number.

It is an amenable number.

90898633565 is a deficient number, since it is larger than the sum of its proper divisors (25418921635).

90898633565 is a wasteful number, since it uses less digits than its factorization.

90898633565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7421.

The product of its (nonzero) digits is 41990400, while the sum is 62.

The spelling of 90898633565 in words is "ninety billion, eight hundred ninety-eight million, six hundred thirty-three thousand, five hundred sixty-five".