21714698 has 8 divisors (see below), whose sum is σ = 32626692. Its totient is φ = 10839136.

The previous prime is 21714617. The next prime is 21714703. The reversal of 21714698 is 89641712.

It can be written as a sum of positive squares in 2 ways, for example, as 14386849 + 7327849 = 3793^2 + 2707^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7565 + ... + 10032.

Almost surely, 2^21714698 is an apocalyptic number.

21714698 is a deficient number, since it is larger than the sum of its proper divisors (10911994).

21714698 is a wasteful number, since it uses less digits than its factorization.

21714698 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18216.

The product of its digits is 24192, while the sum is 38.

The square root of 21714698 is about 4659.9032178791. The cubic root of 21714698 is about 278.9874053829.

The spelling of 21714698 in words is "twenty-one million, seven hundred fourteen thousand, six hundred ninety-eight".