36644851 has 2 divisors, whose sum is σ = 36644852. Its totient is φ = 36644850.

The previous prime is 36644827. The next prime is 36644873. The reversal of 36644851 is 15844663.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 36644851 - 2¹³ = 36636659 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36644851.

It is not a weakly prime, because it can be changed into another prime (36644801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18322425 + 18322426.

It is an arithmetic number, because the mean of its divisors is an integer number (18322426).

Almost surely, 2^36644851 is an apocalyptic number.

36644851 is a deficient number, since it is larger than the sum of its proper divisors (1).

36644851 is an equidigital number, since it uses as much as digits as its factorization.

36644851 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 37.

The square root of 36644851 is about 6053.4990707854. The cubic root of 36644851 is about 332.1525977510.

It can be divided in two parts, 3664 and 4851, that added together give a triangular number (8515 = T₁₃₀).

The spelling of 36644851 in words is "thirty-six million, six hundred forty-four thousand, eight hundred fifty-one".