90864161 has 8 divisors (see below), whose sum is σ = 91744800. Its totient is φ = 89987040.

The previous prime is 90864157. The next prime is 90864181. The reversal of 90864161 is 16146809.

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 90864161 - 2² = 90864157 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90864121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105350 + ... + 106208.

It is an arithmetic number, because the mean of its divisors is an integer number (11468100).

Almost surely, 2^90864161 is an apocalyptic number.

It is an amenable number.

90864161 is a deficient number, since it is larger than the sum of its proper divisors (880639).

90864161 is a wasteful number, since it uses less digits than its factorization.

90864161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 90864161 is about 9532.2694569551. The cubic root of 90864161 is about 449.5702250627.

The spelling of 90864161 in words is "ninety million, eight hundred sixty-four thousand, one hundred sixty-one".