36722661 has 4 divisors (see below), whose sum is σ = 48963552. Its totient is φ = 24481772.

The previous prime is 36722659. The next prime is 36722677. The reversal of 36722661 is 16622763.

36722661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16622763 = 3 ⋅5540921.

It is a cyclic number.

It is not a de Polignac number, because 36722661 - 2¹ = 36722659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36722641) 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 in 3 ways as a sum of consecutive naturals, for example, 6120441 + ... + 6120446.

It is an arithmetic number, because the mean of its divisors is an integer number (12240888).

Almost surely, 2^36722661 is an apocalyptic number.

It is an amenable number.

36722661 is a deficient number, since it is larger than the sum of its proper divisors (12240891).

36722661 is a wasteful number, since it uses less digits than its factorization.

36722661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12240890.

The product of its digits is 18144, while the sum is 33.

The square root of 36722661 is about 6059.9225242572. The cubic root of 36722661 is about 332.3875240951.

The spelling of 36722661 in words is "thirty-six million, seven hundred twenty-two thousand, six hundred sixty-one".