90891696 has 80 divisors (see below), whose sum is σ = 270212864. Its totient is φ = 25788672.

The previous prime is 90891641. The next prime is 90891701. The reversal of 90891696 is 69619809.

It is a super-2 number, since 2×90891696² = 16522600803512832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 51891 + ... + 53613.

Almost surely, 2^90891696 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 90891696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (135106432).

90891696 is an abundant number, since it is smaller than the sum of its proper divisors (179321168).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90891696 is a wasteful number, since it uses less digits than its factorization.

90891696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1898 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 48.

The square root of 90891696 is about 9533.7136520875. The cubic root of 90891696 is about 449.6156322794.

The spelling of 90891696 in words is "ninety million, eight hundred ninety-one thousand, six hundred ninety-six".