91690794 has 48 divisors (see below), whose sum is σ = 215560800. Its totient is φ = 27999648.

The previous prime is 91690793. The next prime is 91690817. The reversal of 91690794 is 49709619.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (91690793) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 31117 + ... + 33935.

It is an arithmetic number, because the mean of its divisors is an integer number (4490850).

Almost surely, 2^91690794 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 91690794, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107780400).

91690794 is an abundant number, since it is smaller than the sum of its proper divisors (123870006).

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

91690794 is a wasteful number, since it uses less digits than its factorization.

91690794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 2976 counting only the distinct ones).

The product of its (nonzero) digits is 122472, while the sum is 45.

The square root of 91690794 is about 9575.5310035528. The cubic root of 91690794 is about 450.9294271934.

The spelling of 91690794 in words is "ninety-one million, six hundred ninety thousand, seven hundred ninety-four".