22195897 has 8 divisors (see below), whose sum is σ = 24523776. Its totient is φ = 19981632.

The previous prime is 22195889. The next prime is 22195981. The reversal of 22195897 is 79859122.

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 22195897 - 2³ = 22195889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22195837) 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, 27993 + ... + 28774.

It is an arithmetic number, because the mean of its divisors is an integer number (3065472).

Almost surely, 2^22195897 is an apocalyptic number.

It is an amenable number.

22195897 is a deficient number, since it is larger than the sum of its proper divisors (2327879).

22195897 is a wasteful number, since it uses less digits than its factorization.

22195897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56807.

The product of its digits is 90720, while the sum is 43.

The square root of 22195897 is about 4711.2521690098. The cubic root of 22195897 is about 281.0331601381.

The spelling of 22195897 in words is "twenty-two million, one hundred ninety-five thousand, eight hundred ninety-seven".