36720449 has 2 divisors, whose sum is σ = 36720450. Its totient is φ = 36720448.

The previous prime is 36720413. The next prime is 36720451. The reversal of 36720449 is 94402763.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34339600 + 2380849 = 5860^2 + 1543^2 .

It is a cyclic number.

It is not a de Polignac number, because 36720449 - 2¹⁶ = 36654913 is a prime.

Together with 36720451, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (36720349) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18360224 + 18360225.

It is an arithmetic number, because the mean of its divisors is an integer number (18360225).

Almost surely, 2^36720449 is an apocalyptic number.

It is an amenable number.

36720449 is a deficient number, since it is larger than the sum of its proper divisors (1).

36720449 is an equidigital number, since it uses as much as digits as its factorization.

36720449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36288, while the sum is 35.

The square root of 36720449 is about 6059.7400109246. The cubic root of 36720449 is about 332.3808501419.

The spelling of 36720449 in words is "thirty-six million, seven hundred twenty thousand, four hundred forty-nine".