21796797 has 8 divisors (see below), whose sum is σ = 31704480. Its totient is φ = 13210160.

The previous prime is 21796793. The next prime is 21796807. The reversal of 21796797 is 79769712.

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

It is a cyclic number.

It is not a de Polignac number, because 21796797 - 2² = 21796793 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21796793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 330222 + ... + 330287.

It is an arithmetic number, because the mean of its divisors is an integer number (3963060).

Almost surely, 2^21796797 is an apocalyptic number.

It is an amenable number.

21796797 is a deficient number, since it is larger than the sum of its proper divisors (9907683).

21796797 is a wasteful number, since it uses less digits than its factorization.

21796797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 660523.

The product of its digits is 333396, while the sum is 48.

The square root of 21796797 is about 4668.7039957573. The cubic root of 21796797 is about 279.3385620290.

The spelling of 21796797 in words is "twenty-one million, seven hundred ninety-six thousand, seven hundred ninety-seven".