90064491 has 8 divisors (see below), whose sum is σ = 131002944. Its totient is φ = 54584520.

The previous prime is 90064483. The next prime is 90064493. The reversal of 90064491 is 19446009.

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

It is not a de Polignac number, because 90064491 - 2³ = 90064483 is a prime.

It is a super-2 number, since 2×90064491² = 16223225078178162, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 2729227 = 90064491 / (9 + 0 + 0 + 6 + 4 + 4 + 9 + 1).

It is not an unprimeable number, because it can be changed into a prime (90064493) 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, 1364581 + ... + 1364646.

It is an arithmetic number, because the mean of its divisors is an integer number (16375368).

Almost surely, 2^90064491 is an apocalyptic number.

90064491 is a deficient number, since it is larger than the sum of its proper divisors (40938453).

90064491 is a wasteful number, since it uses less digits than its factorization.

90064491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2729241.

The product of its (nonzero) digits is 7776, while the sum is 33.

The square root of 90064491 is about 9490.2313459683. The cubic root of 90064491 is about 448.2474899406.

The spelling of 90064491 in words is "ninety million, sixty-four thousand, four hundred ninety-one".