90715387 has 8 divisors (see below), whose sum is σ = 105222656. Its totient is φ = 76595112.

The previous prime is 90715369. The next prime is 90715397. The reversal of 90715387 is 78351709.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90715387 - 2¹⁵ = 90682619 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90715307) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96243 + ... + 97180.

It is an arithmetic number, because the mean of its divisors is an integer number (13152832).

Almost surely, 2^90715387 is an apocalyptic number.

90715387 is a deficient number, since it is larger than the sum of its proper divisors (14507269).

90715387 is a wasteful number, since it uses less digits than its factorization.

90715387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193497.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 90715387 is about 9524.4625570160. The cubic root of 90715387 is about 449.3247271057.

The spelling of 90715387 in words is "ninety million, seven hundred fifteen thousand, three hundred eighty-seven".