36664861 has 2 divisors, whose sum is σ = 36664862. Its totient is φ = 36664860.

The previous prime is 36664819. The next prime is 36664871. The reversal of 36664861 is 16846663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 27092025 + 9572836 = 5205^2 + 3094^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36664861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36664811) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18332430 + 18332431.

It is an arithmetic number, because the mean of its divisors is an integer number (18332431).

Almost surely, 2^36664861 is an apocalyptic number.

It is an amenable number.

36664861 is a deficient number, since it is larger than the sum of its proper divisors (1).

36664861 is an equidigital number, since it uses as much as digits as its factorization.

36664861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 124416, while the sum is 40.

The square root of 36664861 is about 6055.1516083414. The cubic root of 36664861 is about 332.2130442977.

The spelling of 36664861 in words is "thirty-six million, six hundred sixty-four thousand, eight hundred sixty-one".