90651913 has 8 divisors (see below), whose sum is σ = 99290016. Its totient is φ = 82080000.

The previous prime is 90651839. The next prime is 90651919. The reversal of 90651913 is 31915609.

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 90651913 - 2⁹ = 90651401 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90651919) 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, 13656 + ... + 19177.

It is an arithmetic number, because the mean of its divisors is an integer number (12411252).

Almost surely, 2^90651913 is an apocalyptic number.

It is an amenable number.

90651913 is a deficient number, since it is larger than the sum of its proper divisors (8638103).

90651913 is a wasteful number, since it uses less digits than its factorization.

90651913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33095.

The product of its (nonzero) digits is 7290, while the sum is 34.

The square root of 90651913 is about 9521.1298174114. The cubic root of 90651913 is about 449.2199044171.

The spelling of 90651913 in words is "ninety million, six hundred fifty-one thousand, nine hundred thirteen".