36664549 has 2 divisors, whose sum is σ = 36664550. Its totient is φ = 36664548.

The previous prime is 36664543. The next prime is 36664583. The reversal of 36664549 is 94546663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21687649 + 14976900 = 4657^2 + 3870^2 .

It is an emirp because it is prime and its reverse (94546663) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36664549 - 2³ = 36664541 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36664541) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18332274 + 18332275.

It is an arithmetic number, because the mean of its divisors is an integer number (18332275).

Almost surely, 2^36664549 is an apocalyptic number.

It is an amenable number.

36664549 is a deficient number, since it is larger than the sum of its proper divisors (1).

36664549 is an equidigital number, since it uses as much as digits as its factorization.

36664549 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 466560, while the sum is 43.

The square root of 36664549 is about 6055.1258451002. The cubic root of 36664549 is about 332.2121019716.

The spelling of 36664549 in words is "thirty-six million, six hundred sixty-four thousand, five hundred forty-nine".