90660297 has 32 divisors (see below), whose sum is σ = 152255488. Its totient is φ = 46702656.

The previous prime is 90660281. The next prime is 90660299. The reversal of 90660297 is 79206609.

It is not a de Polignac number, because 90660297 - 2⁴ = 90660281 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (90660299) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7878 + ... + 15600.

It is an arithmetic number, because the mean of its divisors is an integer number (4757984).

Almost surely, 2^90660297 is an apocalyptic number.

It is an amenable number.

90660297 is a deficient number, since it is larger than the sum of its proper divisors (61595191).

90660297 is a wasteful number, since it uses less digits than its factorization.

90660297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7789.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 90660297 is about 9521.5700911142. The cubic root of 90660297 is about 449.2337527867.

The spelling of 90660297 in words is "ninety million, six hundred sixty thousand, two hundred ninety-seven".