90660307 has 4 divisors (see below), whose sum is σ = 92871576. Its totient is φ = 88449040.

The previous prime is 90660299. The next prime is 90660329. The reversal of 90660307 is 70306609.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90660307 - 2³ = 90660299 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90660007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1105573 + ... + 1105654.

It is an arithmetic number, because the mean of its divisors is an integer number (23217894).

Almost surely, 2^90660307 is an apocalyptic number.

90660307 is a deficient number, since it is larger than the sum of its proper divisors (2211269).

90660307 is a wasteful number, since it uses less digits than its factorization.

90660307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2211268.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 90660307 is about 9521.5706162376. The cubic root of 90660307 is about 449.2337693038.

The spelling of 90660307 in words is "ninety million, six hundred sixty thousand, three hundred seven".