36991564 has 12 divisors (see below), whose sum is σ = 66485104. Its totient is φ = 17995824.

The previous prime is 36991561. The next prime is 36991573. The reversal of 36991564 is 46519963.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 36991564.

It is not an unprimeable number, because it can be changed into a prime (36991561) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 124824 + ... + 125119.

Almost surely, 2^36991564 is an apocalyptic number.

It is an amenable number.

36991564 is a deficient number, since it is larger than the sum of its proper divisors (29493540).

36991564 is a wasteful number, since it uses less digits than its factorization.

36991564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 249984 (or 249982 counting only the distinct ones).

The product of its digits is 174960, while the sum is 43.

The square root of 36991564 is about 6082.0690558395. The cubic root of 36991564 is about 333.1968583536.

The spelling of 36991564 in words is "thirty-six million, nine hundred ninety-one thousand, five hundred sixty-four".