90707245 has 16 divisors (see below), whose sum is σ = 111030192. Its totient is φ = 71124480.

The previous prime is 90707231. The next prime is 90707261. The reversal of 90707245 is 54270709.

It can be written as a sum of positive squares in 8 ways, for example, as 133956 + 90573289 = 366^2 + 9517^2 .

It is not a de Polignac number, because 90707245 - 2⁷ = 90707117 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 90707245.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65379 + ... + 66751.

It is an arithmetic number, because the mean of its divisors is an integer number (6939387).

Almost surely, 2^90707245 is an apocalyptic number.

It is an amenable number.

90707245 is a deficient number, since it is larger than the sum of its proper divisors (20322947).

90707245 is a wasteful number, since it uses less digits than its factorization.

90707245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1632.

The product of its (nonzero) digits is 17640, while the sum is 34.

The square root of 90707245 is about 9524.0351217328. The cubic root of 90707245 is about 449.3112839200.

The spelling of 90707245 in words is "ninety million, seven hundred seven thousand, two hundred forty-five".