90708715 has 16 divisors (see below), whose sum is σ = 112451328. Its totient is φ = 70199136.

The previous prime is 90708713. The next prime is 90708727. The reversal of 90708715 is 51780709.

It is a cyclic number.

It is not a de Polignac number, because 90708715 - 2¹ = 90708713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90708713) 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, 21034 + ... + 24976.

It is an arithmetic number, because the mean of its divisors is an integer number (7028208).

Almost surely, 2^90708715 is an apocalyptic number.

90708715 is a deficient number, since it is larger than the sum of its proper divisors (21742613).

90708715 is a wasteful number, since it uses less digits than its factorization.

90708715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4098.

The product of its (nonzero) digits is 17640, while the sum is 37.

The square root of 90708715 is about 9524.1122945921. The cubic root of 90708715 is about 449.3137110838.

The spelling of 90708715 in words is "ninety million, seven hundred eight thousand, seven hundred fifteen".