90688611 has 12 divisors (see below), whose sum is σ = 130935768. Its totient is φ = 55808064.

The previous prime is 90688579. The next prime is 90688643. The reversal of 90688611 is 11688609.

It is an interprime number because it is at equal distance from previous prime (90688579) and next prime (90688643).

It is not a de Polignac number, because 90688611 - 2⁵ = 90688579 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 90688611.

It is not an unprimeable number, because it can be changed into a prime (90688651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 88930 + ... + 89943.

It is an arithmetic number, because the mean of its divisors is an integer number (10911314).

Almost surely, 2^90688611 is an apocalyptic number.

90688611 is a deficient number, since it is larger than the sum of its proper divisors (40247157).

90688611 is a wasteful number, since it uses less digits than its factorization.

90688611 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178902 (or 178889 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 39.

The square root of 90688611 is about 9523.0568096594. The cubic root of 90688611 is about 449.2805144563.

The spelling of 90688611 in words is "ninety million, six hundred eighty-eight thousand, six hundred eleven".