21714773 has 4 divisors (see below), whose sum is σ = 22082880. Its totient is φ = 21346668.

The previous prime is 21714733. The next prime is 21714779. The reversal of 21714773 is 37741712.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 21714773 - 2¹⁶ = 21649237 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21714779) 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, 183965 + ... + 184082.

It is an arithmetic number, because the mean of its divisors is an integer number (5520720).

Almost surely, 2^21714773 is an apocalyptic number.

It is an amenable number.

21714773 is a deficient number, since it is larger than the sum of its proper divisors (368107).

21714773 is an equidigital number, since it uses as much as digits as its factorization.

21714773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 368106.

The product of its digits is 8232, while the sum is 32.

The square root of 21714773 is about 4659.9112652496. The cubic root of 21714773 is about 278.9877265790.

The spelling of 21714773 in words is "twenty-one million, seven hundred fourteen thousand, seven hundred seventy-three".