90709245 has 96 divisors (see below), whose sum is σ = 181958400. Its totient is φ = 41395200.

The previous prime is 90709219. The next prime is 90709271. The reversal of 90709245 is 54290709.

It is an interprime number because it is at equal distance from previous prime (90709219) and next prime (90709271).

It is not a de Polignac number, because 90709245 - 2⁷ = 90709117 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1019161 + ... + 1019249.

It is an arithmetic number, because the mean of its divisors is an integer number (1895400).

Almost surely, 2^90709245 is an apocalyptic number.

It is an amenable number.

90709245 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

90709245 is a wasteful number, since it uses less digits than its factorization.

90709245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211 (or 208 counting only the distinct ones).

The product of its (nonzero) digits is 22680, while the sum is 36.

The square root of 90709245 is about 9524.1401186669. The cubic root of 90709245 is about 449.3145861772.

The spelling of 90709245 in words is "ninety million, seven hundred nine thousand, two hundred forty-five".