21600897 has 8 divisors (see below), whose sum is σ = 30495456. Its totient is φ = 13553472.

The previous prime is 21600889. The next prime is 21600907. The reversal of 21600897 is 79800612.

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

It is not a de Polignac number, because 21600897 - 2³ = 21600889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (21600847) 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, 211723 + ... + 211824.

It is an arithmetic number, because the mean of its divisors is an integer number (3811932).

Almost surely, 2^21600897 is an apocalyptic number.

It is an amenable number.

21600897 is a deficient number, since it is larger than the sum of its proper divisors (8894559).

21600897 is a wasteful number, since it uses less digits than its factorization.

21600897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423567.

The product of its (nonzero) digits is 6048, while the sum is 33.

The square root of 21600897 is about 4647.6765162821. The cubic root of 21600897 is about 278.4991850608.

The spelling of 21600897 in words is "twenty-one million, six hundred thousand, eight hundred ninety-seven".