36768409 has 2 divisors, whose sum is σ = 36768410. Its totient is φ = 36768408.

The previous prime is 36768371. The next prime is 36768427. The reversal of 36768409 is 90486763.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 36638809 + 129600 = 6053^2 + 360^2 .

It is an emirp because it is prime and its reverse (90486763) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36768409 - 2¹⁹ = 36244121 is a prime.

It is not a weakly prime, because it can be changed into another prime (36768509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18384204 + 18384205.

It is an arithmetic number, because the mean of its divisors is an integer number (18384205).

Almost surely, 2^36768409 is an apocalyptic number.

It is an amenable number.

36768409 is a deficient number, since it is larger than the sum of its proper divisors (1).

36768409 is an equidigital number, since it uses as much as digits as its factorization.

36768409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 36768409 is about 6063.6959851233. The cubic root of 36768409 is about 332.5254929857.

The spelling of 36768409 in words is "thirty-six million, seven hundred sixty-eight thousand, four hundred nine".