36644873 has 2 divisors, whose sum is σ = 36644874. Its totient is φ = 36644872.

The previous prime is 36644851. The next prime is 36644879. The reversal of 36644873 is 37844663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30558784 + 6086089 = 5528^2 + 2467^2 .

It is an emirp because it is prime and its reverse (37844663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36644873 - 2⁸ = 36644617 is a prime.

It is a super-2 number, since 2×36644873² = 2685693434372258, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 36644873.

It is not a weakly prime, because it can be changed into another prime (36644879) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18322436 + 18322437.

It is an arithmetic number, because the mean of its divisors is an integer number (18322437).

Almost surely, 2^36644873 is an apocalyptic number.

It is an amenable number.

36644873 is a deficient number, since it is larger than the sum of its proper divisors (1).

36644873 is an equidigital number, since it uses as much as digits as its factorization.

36644873 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 41.

The square root of 36644873 is about 6053.5008879160. The cubic root of 36644873 is about 332.1526642210.

The spelling of 36644873 in words is "thirty-six million, six hundred forty-four thousand, eight hundred seventy-three".