36520661 has 2 divisors, whose sum is σ = 36520662. Its totient is φ = 36520660.

The previous prime is 36520651. The next prime is 36520663. The reversal of 36520661 is 16602563.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29920900 + 6599761 = 5470^2 + 2569^2 .

It is an emirp because it is prime and its reverse (16602563) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36520661 - 2¹⁴ = 36504277 is a prime.

Together with 36520663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36520663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18260330 + 18260331.

It is an arithmetic number, because the mean of its divisors is an integer number (18260331).

Almost surely, 2^36520661 is an apocalyptic number.

It is an amenable number.

36520661 is a deficient number, since it is larger than the sum of its proper divisors (1).

36520661 is an equidigital number, since it uses as much as digits as its factorization.

36520661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 29.

The square root of 36520661 is about 6043.2326614156. The cubic root of 36520661 is about 331.7769495409.

The spelling of 36520661 in words is "thirty-six million, five hundred twenty thousand, six hundred sixty-one".