90706907 has 4 divisors (see below), whose sum is σ = 91284816. Its totient is φ = 90129000.

The previous prime is 90706873. The next prime is 90706919. The reversal of 90706907 is 70960709.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 90706907 - 2⁶ = 90706843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90706937) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 288719 + ... + 289032.

It is an arithmetic number, because the mean of its divisors is an integer number (22821204).

Almost surely, 2^90706907 is an apocalyptic number.

90706907 is a deficient number, since it is larger than the sum of its proper divisors (577909).

90706907 is a wasteful number, since it uses less digits than its factorization.

90706907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577908.

The product of its (nonzero) digits is 23814, while the sum is 38.

The square root of 90706907 is about 9524.0173771366. The cubic root of 90706907 is about 449.3107258337.

The spelling of 90706907 in words is "ninety million, seven hundred six thousand, nine hundred seven".