36642637 has 2 divisors, whose sum is σ = 36642638. Its totient is φ = 36642636.

The previous prime is 36642607. The next prime is 36642647. The reversal of 36642637 is 73624663.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33477796 + 3164841 = 5786^2 + 1779^2 .

It is a cyclic number.

It is not a de Polignac number, because 36642637 - 2⁷ = 36642509 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 36642596 and 36642605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36642607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18321318 + 18321319.

It is an arithmetic number, because the mean of its divisors is an integer number (18321319).

Almost surely, 2^36642637 is an apocalyptic number.

It is an amenable number.

36642637 is a deficient number, since it is larger than the sum of its proper divisors (1).

36642637 is an equidigital number, since it uses as much as digits as its factorization.

36642637 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 37.

The square root of 36642637 is about 6053.3161985807. The cubic root of 36642637 is about 332.1459083104.

The spelling of 36642637 in words is "thirty-six million, six hundred forty-two thousand, six hundred thirty-seven".