90664131 has 8 divisors (see below), whose sum is σ = 120947904. Its totient is φ = 60411560.

The previous prime is 90664127. The next prime is 90664153. The reversal of 90664131 is 13146609.

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 90664131 - 2² = 90664127 is a prime.

It is a super-2 number, since 2×90664131² = 16439969299970322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (90664531) 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, 136 + ... + 13466.

It is an arithmetic number, because the mean of its divisors is an integer number (15118488).

Almost surely, 2^90664131 is an apocalyptic number.

90664131 is a deficient number, since it is larger than the sum of its proper divisors (30283773).

90664131 is a wasteful number, since it uses less digits than its factorization.

90664131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15601.

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 90664131 is about 9521.7714213270. The cubic root of 90664131 is about 449.2400853563.

The spelling of 90664131 in words is "ninety million, six hundred sixty-four thousand, one hundred thirty-one".