90688115 has 16 divisors (see below), whose sum is σ = 131689152. Its totient is φ = 58527744.

The previous prime is 90688111. The next prime is 90688127. The reversal of 90688115 is 51188609.

It is a cyclic number.

It is not a de Polignac number, because 90688115 - 2² = 90688111 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90688111) 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, 75614 + ... + 76803.

It is an arithmetic number, because the mean of its divisors is an integer number (8230572).

Almost surely, 2^90688115 is an apocalyptic number.

90688115 is a deficient number, since it is larger than the sum of its proper divisors (41001037).

90688115 is a wasteful number, since it uses less digits than its factorization.

90688115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152446.

The product of its (nonzero) digits is 17280, while the sum is 38.

The square root of 90688115 is about 9523.0307675655. The cubic root of 90688115 is about 449.2796953768.

The spelling of 90688115 in words is "ninety million, six hundred eighty-eight thousand, one hundred fifteen".