36622681 has 2 divisors, whose sum is σ = 36622682. Its totient is φ = 36622680.

The previous prime is 36622673. The next prime is 36622721. The reversal of 36622681 is 18622663.

It is a happy number.

36622681 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36542025 + 80656 = 6045^2 + 284^2 .

It is a cyclic number.

It is not a de Polignac number, because 36622681 - 2³ = 36622673 is a prime.

It is a super-2 number, since 2×36622681² = 2682441527255522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (36622661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18311340 + 18311341.

It is an arithmetic number, because the mean of its divisors is an integer number (18311341).

Almost surely, 2^36622681 is an apocalyptic number.

It is an amenable number.

36622681 is a deficient number, since it is larger than the sum of its proper divisors (1).

36622681 is an equidigital number, since it uses as much as digits as its factorization.

36622681 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 20736, while the sum is 34.

The square root of 36622681 is about 6051.6676214082. The cubic root of 36622681 is about 332.0856005384.

The spelling of 36622681 in words is "thirty-six million, six hundred twenty-two thousand, six hundred eighty-one".