36720517 has 2 divisors, whose sum is σ = 36720518. Its totient is φ = 36720516.

The previous prime is 36720511. The next prime is 36720529. The reversal of 36720517 is 71502763.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20511841 + 16208676 = 4529^2 + 4026^2 .

It is an emirp because it is prime and its reverse (71502763) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36720517 - 2⁷ = 36720389 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36720511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18360258 + 18360259.

It is an arithmetic number, because the mean of its divisors is an integer number (18360259).

Almost surely, 2^36720517 is an apocalyptic number.

It is an amenable number.

36720517 is a deficient number, since it is larger than the sum of its proper divisors (1).

36720517 is an equidigital number, since it uses as much as digits as its factorization.

36720517 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8820, while the sum is 31.

The square root of 36720517 is about 6059.7456217237. The cubic root of 36720517 is about 332.3810553126.

The spelling of 36720517 in words is "thirty-six million, seven hundred twenty thousand, five hundred seventeen".