91469768 has 32 divisors (see below), whose sum is σ = 186513600. Its totient is φ = 41802048.

The previous prime is 91469767. The next prime is 91469773. The reversal of 91469768 is 86796419.

It is not an unprimeable number, because it can be changed into a prime (91469761) 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, 6443 + ... + 14981.

It is an arithmetic number, because the mean of its divisors is an integer number (5828550).

Almost surely, 2^91469768 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 91469768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (93256800).

91469768 is an abundant number, since it is smaller than the sum of its proper divisors (95043832).

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

91469768 is a wasteful number, since it uses less digits than its factorization.

91469768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8661 (or 8657 counting only the distinct ones).

The product of its digits is 653184, while the sum is 50.

The square root of 91469768 is about 9563.9828523477. The cubic root of 91469768 is about 450.5668051128.

The spelling of 91469768 in words is "ninety-one million, four hundred sixty-nine thousand, seven hundred sixty-eight".