36113621 has 2 divisors, whose sum is σ = 36113622. Its totient is φ = 36113620.

The previous prime is 36113587. The next prime is 36113633. The reversal of 36113621 is 12631163.

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., 32330596 + 3783025 = 5686^2 + 1945^2 .

It is a cyclic number.

It is not a de Polignac number, because 36113621 - 2²² = 31919317 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36113641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18056810 + 18056811.

It is an arithmetic number, because the mean of its divisors is an integer number (18056811).

Almost surely, 2^36113621 is an apocalyptic number.

It is an amenable number.

36113621 is a deficient number, since it is larger than the sum of its proper divisors (1).

36113621 is an equidigital number, since it uses as much as digits as its factorization.

36113621 is an evil number, because the sum of its binary digits is even.

The product of its digits is 648, while the sum is 23.

The square root of 36113621 is about 6009.4609575236. The cubic root of 36113621 is about 330.5397381044.

Adding to 36113621 its reverse (12631163), we get a palindrome (48744784).

The spelling of 36113621 in words is "thirty-six million, one hundred thirteen thousand, six hundred twenty-one".