36644737 has 2 divisors, whose sum is σ = 36644738. Its totient is φ = 36644736.

The previous prime is 36644731. The next prime is 36644747. The reversal of 36644737 is 73744663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 27133681 + 9511056 = 5209^2 + 3084^2 .

It is a cyclic number.

It is not a de Polignac number, because 36644737 - 2¹⁵ = 36611969 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36644737.

It is not a weakly prime, because it can be changed into another prime (36644731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18322368 + 18322369.

It is an arithmetic number, because the mean of its divisors is an integer number (18322369).

Almost surely, 2^36644737 is an apocalyptic number.

It is an amenable number.

36644737 is a deficient number, since it is larger than the sum of its proper divisors (1).

36644737 is an equidigital number, since it uses as much as digits as its factorization.

36644737 is an evil number, because the sum of its binary digits is even.

The product of its digits is 254016, while the sum is 40.

The square root of 36644737 is about 6053.4896547363. The cubic root of 36644737 is about 332.1522533148.

The spelling of 36644737 in words is "thirty-six million, six hundred forty-four thousand, seven hundred thirty-seven".