90612722 has 18 divisors (see below), whose sum is σ = 139631373. Its totient is φ = 44101512.

The previous prime is 90612719. The next prime is 90612751. The reversal of 90612722 is 22721609.

It can be written as a sum of positive squares in 2 ways, for example, as 85951441 + 4661281 = 9271^2 + 2159^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=6731.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 713423 + ... + 713549.

Almost surely, 2^90612722 is an apocalyptic number.

90612722 is a deficient number, since it is larger than the sum of its proper divisors (49018651).

90612722 is an equidigital number, since it uses as much as digits as its factorization.

90612722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 362 (or 182 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 90612722 is about 9519.0714883333. The cubic root of 90612722 is about 449.1551589000.

The spelling of 90612722 in words is "ninety million, six hundred twelve thousand, seven hundred twenty-two".