17220897 has 16 divisors (see below), whose sum is σ = 26856000. Its totient is φ = 10876032.

The previous prime is 17220893. The next prime is 17220899. The reversal of 17220897 is 79802271.

It is not a de Polignac number, because 17220897 - 2² = 17220893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17220893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16272 + ... + 17297.

It is an arithmetic number, because the mean of its divisors is an integer number (1678500).

Almost surely, 2^17220897 is an apocalyptic number.

It is an amenable number.

17220897 is a deficient number, since it is larger than the sum of its proper divisors (9635103).

17220897 is a wasteful number, since it uses less digits than its factorization.

17220897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33597 (or 33591 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The square root of 17220897 is about 4149.8068629757. The cubic root of 17220897 is about 258.2370725180.

The spelling of 17220897 in words is "seventeen million, two hundred twenty thousand, eight hundred ninety-seven".