36921 has 8 divisors (see below), whose sum is σ = 50944. Its totient is φ = 23760.

The previous prime is 36919. The next prime is 36923. The reversal of 36921 is 12963.

It is an interprime number because it is at equal distance from previous prime (36919) and next prime (36923).

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

It is not a de Polignac number, because 36921 - 2¹ = 36919 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a nialpdrome in base 14.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 36921.

It is not an unprimeable number, because it can be changed into a prime (36923) 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, 106 + ... + 291.

It is an arithmetic number, because the mean of its divisors is an integer number (6368).

2³⁶⁹²¹ is an apocalyptic number.

36921 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

It is an amenable number.

36921 is a deficient number, since it is larger than the sum of its proper divisors (14023).

36921 is a wasteful number, since it uses less digits than its factorization.

36921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 431.

The product of its digits is 324, while the sum is 21.

The square root of 36921 is about 192.1483801649. The cubic root of 36921 is about 33.2984858044.

The spelling of 36921 in words is "thirty-six thousand, nine hundred twenty-one".