21714699 has 8 divisors (see below), whose sum is σ = 29626432. Its totient is φ = 14139720.

The previous prime is 21714617. The next prime is 21714703. The reversal of 21714699 is 99641712.

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

It is not a de Polignac number, because 21714699 - 2⁷ = 21714571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21715699) by changing a digit.

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, 84037 + ... + 84294.

It is an arithmetic number, because the mean of its divisors is an integer number (3703304).

Almost surely, 2^21714699 is an apocalyptic number.

21714699 is a deficient number, since it is larger than the sum of its proper divisors (7911733).

21714699 is a wasteful number, since it uses less digits than its factorization.

21714699 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 168377.

The product of its digits is 27216, while the sum is 39.

The square root of 21714699 is about 4659.9033251775. The cubic root of 21714699 is about 278.9874096655.

The spelling of 21714699 in words is "twenty-one million, seven hundred fourteen thousand, six hundred ninety-nine".