91669596 has 24 divisors (see below), whose sum is σ = 215009424. Its totient is φ = 30397440.

The previous prime is 91669561. The next prime is 91669597. The reversal of 91669596 is 69596619.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91669597) 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, 17475 + ... + 22106.

It is an arithmetic number, because the mean of its divisors is an integer number (8958726).

Almost surely, 2^91669596 is an apocalyptic number.

It is an amenable number.

91669596 is an abundant number, since it is smaller than the sum of its proper divisors (123339828).

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

91669596 is a wasteful number, since it uses less digits than its factorization.

91669596 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39781 (or 39779 counting only the distinct ones).

The product of its digits is 787320, while the sum is 51.

The square root of 91669596 is about 9574.4240557853. The cubic root of 91669596 is about 450.8946743816.

The spelling of 91669596 in words is "ninety-one million, six hundred sixty-nine thousand, five hundred ninety-six".