90612319 has 6 divisors (see below), whose sum is σ = 105406224. Its totient is φ = 77667660.

The previous prime is 90612299. The next prime is 90612359. The reversal of 90612319 is 91321609.

It is a de Polignac number, because none of the positive numbers 2^k-90612319 is a prime.

It is a super-2 number, since 2×90612319² = 16421184709115522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90612359) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 924567 + ... + 924664.

It is an arithmetic number, because the mean of its divisors is an integer number (17567704).

Almost surely, 2^90612319 is an apocalyptic number.

90612319 is a deficient number, since it is larger than the sum of its proper divisors (14793905).

90612319 is a wasteful number, since it uses less digits than its factorization.

90612319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849245 (or 1849238 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 90612319 is about 9519.0503202788. The cubic root of 90612319 is about 449.1544930266.

It can be divided in two parts, 906 and 12319, that added together give a square (13225 = 115²).

The spelling of 90612319 in words is "ninety million, six hundred twelve thousand, three hundred nineteen".