21614966 has 16 divisors (see below), whose sum is σ = 32886000. Its totient is φ = 10654368.

The previous prime is 21614959. The next prime is 21614981. The reversal of 21614966 is 66941612.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61760 + ... + 62108.

It is an arithmetic number, because the mean of its divisors is an integer number (2055375).

Almost surely, 2^21614966 is an apocalyptic number.

21614966 is a deficient number, since it is larger than the sum of its proper divisors (11271034).

21614966 is a wasteful number, since it uses less digits than its factorization.

21614966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

The product of its digits is 15552, while the sum is 35.

The square root of 21614966 is about 4649.1898218937. The cubic root of 21614966 is about 278.5596355547.

The spelling of 21614966 in words is "twenty-one million, six hundred fourteen thousand, nine hundred sixty-six".