36690621 has 16 divisors (see below), whose sum is σ = 53872128. Its totient is φ = 22026800.

The previous prime is 36690617. The next prime is 36690629. The reversal of 36690621 is 12609663.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 36690621 - 2² = 36690617 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36690629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1665 + ... + 8726.

It is an arithmetic number, because the mean of its divisors is an integer number (3367008).

Almost surely, 2^36690621 is an apocalyptic number.

It is an amenable number.

36690621 is a deficient number, since it is larger than the sum of its proper divisors (17181507).

36690621 is a wasteful number, since it uses less digits than its factorization.

36690621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10512.

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 36690621 is about 6057.2783492258. The cubic root of 36690621 is about 332.2908281702.

The spelling of 36690621 in words is "thirty-six million, six hundred ninety thousand, six hundred twenty-one".