91392066 has 24 divisors (see below), whose sum is σ = 198581760. Its totient is φ = 30377016.

The previous prime is 91392013. The next prime is 91392089. The reversal of 91392066 is 66029319.

It is a self number, because there is not a number n which added to its sum of digits gives 91392066.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 610 + ... + 13533.

It is an arithmetic number, because the mean of its divisors is an integer number (8274240).

Almost surely, 2^91392066 is an apocalyptic number.

91392066 is an abundant number, since it is smaller than the sum of its proper divisors (107189694).

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

91392066 is a wasteful number, since it uses less digits than its factorization.

91392066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14510 (or 14507 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 36.

The square root of 91392066 is about 9559.9197695378. The cubic root of 91392066 is about 450.4391860434.

The spelling of 91392066 in words is "ninety-one million, three hundred ninety-two thousand, sixty-six".