91836765 has 24 divisors (see below), whose sum is σ = 164675160. Its totient is φ = 47289984.

The previous prime is 91836763. The next prime is 91836779. The reversal of 91836765 is 56763819.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 79524 + 91757241 = 282^2 + 9579^2 .

It is not a de Polignac number, because 91836765 - 2¹ = 91836763 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 91836765.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (91836763) 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, 33882 + ... + 36491.

It is an arithmetic number, because the mean of its divisors is an integer number (6861465).

Almost surely, 2^91836765 is an apocalyptic number.

It is an amenable number.

91836765 is a deficient number, since it is larger than the sum of its proper divisors (72838395).

91836765 is a wasteful number, since it uses less digits than its factorization.

91836765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70413 (or 70410 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 91836765 is about 9583.1500562185. The cubic root of 91836765 is about 451.1685923183.

The spelling of 91836765 in words is "ninety-one million, eight hundred thirty-six thousand, seven hundred sixty-five".