90375615 has 32 divisors (see below), whose sum is σ = 175276800. Its totient is φ = 43817760.

The previous prime is 90375611. The next prime is 90375619. The reversal of 90375615 is 51657309.

It is a happy number.

90375615 is a `hidden beast` number, since 9 + 0 + 37 + 5 + 615 = 666.

It is an interprime number because it is at equal distance from previous prime (90375611) and next prime (90375619).

It is not a de Polignac number, because 90375615 - 2² = 90375611 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 90375615.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90375611) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28945 + ... + 31914.

It is an arithmetic number, because the mean of its divisors is an integer number (5477400).

Almost surely, 2^90375615 is an apocalyptic number.

90375615 is a deficient number, since it is larger than the sum of its proper divisors (84901185).

90375615 is a wasteful number, since it uses less digits than its factorization.

90375615 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60884 (or 60878 counting only the distinct ones).

The product of its (nonzero) digits is 28350, while the sum is 36.

The square root of 90375615 is about 9506.6090168893. The cubic root of 90375615 is about 448.7630474451.

The spelling of 90375615 in words is "ninety million, three hundred seventy-five thousand, six hundred fifteen".