91693698 has 16 divisors (see below), whose sum is σ = 184038816. Its totient is φ = 30456000.

The previous prime is 91693697. The next prime is 91693703. The reversal of 91693698 is 89639619.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 91693698.

It is not an unprimeable number, because it can be changed into a prime (91693697) 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, 25303 + ... + 28698.

It is an arithmetic number, because the mean of its divisors is an integer number (11502426).

Almost surely, 2^91693698 is an apocalyptic number.

91693698 is an abundant number, since it is smaller than the sum of its proper divisors (92345118).

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

91693698 is a wasteful number, since it uses less digits than its factorization.

91693698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54289.

The product of its digits is 629856, while the sum is 51.

The square root of 91693698 is about 9575.6826388514. The cubic root of 91693698 is about 450.9341877049.

The spelling of 91693698 in words is "ninety-one million, six hundred ninety-three thousand, six hundred ninety-eight".