21676696 has 16 divisors (see below), whose sum is σ = 40698000. Its totient is φ = 10823904.

The previous prime is 21676691. The next prime is 21676703. The reversal of 21676696 is 69667612.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21676691) 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, 7230 + ... + 9778.

It is an arithmetic number, because the mean of its divisors is an integer number (2543625).

Almost surely, 2^21676696 is an apocalyptic number.

It is an amenable number.

21676696 is a deficient number, since it is larger than the sum of its proper divisors (19021304).

21676696 is a wasteful number, since it uses less digits than its factorization.

21676696 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3618 (or 3614 counting only the distinct ones).

The product of its digits is 163296, while the sum is 43.

The square root of 21676696 is about 4655.8238798305. The cubic root of 21676696 is about 278.8245622224.

The spelling of 21676696 in words is "twenty-one million, six hundred seventy-six thousand, six hundred ninety-six".