91836625 has 8 divisors (see below), whose sum is σ = 114612264. Its totient is φ = 73469200.

The previous prime is 91836623. The next prime is 91836653. The reversal of 91836625 is 52663819.

It can be written as a sum of positive squares in 4 ways, for example, as 309136 + 91527489 = 556^2 + 9567^2 .

It is not a de Polignac number, because 91836625 - 2¹ = 91836623 is a prime.

It is a super-3 number, since 3×91836625³ (a number of 25 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (91836623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 367222 + ... + 367471.

It is an arithmetic number, because the mean of its divisors is an integer number (14326533).

Almost surely, 2^91836625 is an apocalyptic number.

It is an amenable number.

91836625 is a deficient number, since it is larger than the sum of its proper divisors (22775639).

91836625 is an equidigital number, since it uses as much as digits as its factorization.

91836625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 734708 (or 734698 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 91836625 is about 9583.1427517282. The cubic root of 91836625 is about 451.1683630578.

The spelling of 91836625 in words is "ninety-one million, eight hundred thirty-six thousand, six hundred twenty-five".