90730161 has 12 divisors (see below), whose sum is σ = 131341392. Its totient is φ = 60354456.

The previous prime is 90730151. The next prime is 90730169. The reversal of 90730161 is 16103709.

It is not a de Polignac number, because 90730161 - 2⁹ = 90729649 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90730169) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 6591 + ... + 14996.

It is an arithmetic number, because the mean of its divisors is an integer number (10945116).

Almost surely, 2^90730161 is an apocalyptic number.

It is an amenable number.

90730161 is a deficient number, since it is larger than the sum of its proper divisors (40611231).

90730161 is a wasteful number, since it uses less digits than its factorization.

90730161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22060 (or 22057 counting only the distinct ones).

The product of its (nonzero) digits is 1134, while the sum is 27.

The square root of 90730161 is about 9525.2381072601. The cubic root of 90730161 is about 449.3491182753.

The spelling of 90730161 in words is "ninety million, seven hundred thirty thousand, one hundred sixty-one".