91801796 has 12 divisors (see below), whose sum is σ = 160721148. Its totient is φ = 45881472.

The previous prime is 91801789. The next prime is 91801799. The reversal of 91801796 is 69710819.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25867396 + 65934400 = 5086^2 + 8120^2 .

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (91801799) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13400 + ... + 19056.

It is an arithmetic number, because the mean of its divisors is an integer number (13393429).

Almost surely, 2^91801796 is an apocalyptic number.

It is an amenable number.

91801796 is a deficient number, since it is larger than the sum of its proper divisors (68919352).

91801796 is a wasteful number, since it uses less digits than its factorization.

91801796 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9718 (or 9716 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 41.

The square root of 91801796 is about 9581.3253780466. The cubic root of 91801796 is about 451.1113207110. Note that the first 3 decimals are identical.

The spelling of 91801796 in words is "ninety-one million, eight hundred one thousand, seven hundred ninety-six".