90321707 has 8 divisors (see below), whose sum is σ = 103909632. Its totient is φ = 76905000.

The previous prime is 90321703. The next prime is 90321709. The reversal of 90321707 is 70712309.

It is a happy number.

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 90321707 - 2² = 90321703 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90321707.

It is not an unprimeable number, because it can be changed into a prime (90321703) 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, 41669 + ... + 43782.

It is an arithmetic number, because the mean of its divisors is an integer number (12988704).

Almost surely, 2^90321707 is an apocalyptic number.

90321707 is a deficient number, since it is larger than the sum of its proper divisors (13587925).

90321707 is a wasteful number, since it uses less digits than its factorization.

90321707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85609.

The product of its (nonzero) digits is 2646, while the sum is 29.

The square root of 90321707 is about 9503.7733032728. The cubic root of 90321707 is about 448.6738023908.

The spelling of 90321707 in words is "ninety million, three hundred twenty-one thousand, seven hundred seven".