36921665 has 8 divisors (see below), whose sum is σ = 48333888. Its totient is φ = 26852080.

The previous prime is 36921641. The next prime is 36921667. The reversal of 36921665 is 56612963.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 36921665 - 2²² = 32727361 is a prime.

It is a Duffinian number.

It is a Curzon 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 7 ways as a sum of consecutive naturals, for example, 335597 + ... + 335706.

It is an arithmetic number, because the mean of its divisors is an integer number (6041736).

Almost surely, 2^36921665 is an apocalyptic number.

It is an amenable number.

36921665 is a deficient number, since it is larger than the sum of its proper divisors (11412223).

36921665 is a wasteful number, since it uses less digits than its factorization.

36921665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 671319.

The product of its digits is 58320, while the sum is 38.

The square root of 36921665 is about 6076.3200211970. The cubic root of 36921665 is about 332.9868572099.

The spelling of 36921665 in words is "thirty-six million, nine hundred twenty-one thousand, six hundred sixty-five".