90617907 has 16 divisors (see below), whose sum is σ = 127335168. Its totient is φ = 57208800.

The previous prime is 90617887. The next prime is 90617963. The reversal of 90617907 is 70971609.

It is not a de Polignac number, because 90617907 - 2⁶ = 90617843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90617987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 468 + ... + 13470.

It is an arithmetic number, because the mean of its divisors is an integer number (7958448).

Almost surely, 2^90617907 is an apocalyptic number.

90617907 is a deficient number, since it is larger than the sum of its proper divisors (36717261).

90617907 is a wasteful number, since it uses less digits than its factorization.

90617907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13130.

The product of its (nonzero) digits is 23814, while the sum is 39.

The square root of 90617907 is about 9519.3438324288. The cubic root of 90617907 is about 449.1637258541.

The spelling of 90617907 in words is "ninety million, six hundred seventeen thousand, nine hundred seven".