36308621 has 2 divisors, whose sum is σ = 36308622. Its totient is φ = 36308620.

The previous prime is 36308611. The next prime is 36308627. The reversal of 36308621 is 12680363.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18576100 + 17732521 = 4310^2 + 4211^2 .

It is an emirp because it is prime and its reverse (12680363) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36308621 - 2⁶ = 36308557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36308627) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18154310 + 18154311.

It is an arithmetic number, because the mean of its divisors is an integer number (18154311).

Almost surely, 2^36308621 is an apocalyptic number.

It is an amenable number.

36308621 is a deficient number, since it is larger than the sum of its proper divisors (1).

36308621 is an equidigital number, since it uses as much as digits as its factorization.

36308621 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 36308621 is about 6025.6635319274. The cubic root of 36308621 is about 331.1336006834.

Adding to 36308621 its reverse (12680363), we get a palindrome (48988984).

The spelling of 36308621 in words is "thirty-six million, three hundred eight thousand, six hundred twenty-one".