21614 has 8 divisors (see below), whose sum is σ = 33048. Its totient is φ = 10600.

The previous prime is 21613. The next prime is 21617. The reversal of 21614 is 41612.

21614 = 72² + 73² + ... + 75².

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

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

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 21614.

It is not an unprimeable number, because it can be changed into a prime (21611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 149 + ... + 255.

It is an arithmetic number, because the mean of its divisors is an integer number (4131).

2²¹⁶¹⁴ is an apocalyptic number.

21614 is a deficient number, since it is larger than the sum of its proper divisors (11434).

21614 is a wasteful number, since it uses less digits than its factorization.

21614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210.

The product of its digits is 48, while the sum is 14.

The square root of 21614 is about 147.0170058191. The cubic root of 21614 is about 27.8555485766.

The spelling of 21614 in words is "twenty-one thousand, six hundred fourteen".