36921663 has 14 divisors (see below), whose sum is σ = 55358264. Its totient is φ = 24613956.

The previous prime is 36921641. The next prime is 36921667. The reversal of 36921663 is 36612963.

It is not a de Polignac number, because 36921663 - 2⁸ = 36921407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36921667) by changing a digit.

It is a polite number, since it can be written in 13 ways as a sum of consecutive naturals, for example, 24595 + ... + 26052.

Almost surely, 2^36921663 is an apocalyptic number.

36921663 is a deficient number, since it is larger than the sum of its proper divisors (18436601).

36921663 is an frugal number, since it uses more digits than its factorization.

36921663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50665 (or 50650 counting only the distinct ones).

The product of its digits is 34992, while the sum is 36.

The square root of 36921663 is about 6076.3198566237. The cubic root of 36921663 is about 332.9868511974.

The spelling of 36921663 in words is "thirty-six million, nine hundred twenty-one thousand, six hundred sixty-three".