90164261 has 8 divisors (see below), whose sum is σ = 98452800. Its totient is φ = 81891040.

The previous prime is 90164251. The next prime is 90164267. The reversal of 90164261 is 16246109.

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

It is not a de Polignac number, because 90164261 - 2⁶ = 90164197 is a prime.

It is a super-2 number, since 2×90164261² = 16259187923352242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90164267) 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, 11000 + ... + 17358.

It is an arithmetic number, because the mean of its divisors is an integer number (12306600).

Almost surely, 2^90164261 is an apocalyptic number.

It is an amenable number.

90164261 is a deficient number, since it is larger than the sum of its proper divisors (8288539).

90164261 is a wasteful number, since it uses less digits than its factorization.

90164261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7659.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 90164261 is about 9495.4863487870. The cubic root of 90164261 is about 448.4129460047.

The spelling of 90164261 in words is "ninety million, one hundred sixty-four thousand, two hundred sixty-one".