22697997 has 8 divisors (see below), whose sum is σ = 34587456. Its totient is φ = 12970272.

The previous prime is 22697959. The next prime is 22697999. The reversal of 22697997 is 79979622.

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

It is not a de Polignac number, because 22697997 - 2⁶ = 22697933 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22697999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 540408 + ... + 540449.

It is an arithmetic number, because the mean of its divisors is an integer number (4323432).

Almost surely, 2^22697997 is an apocalyptic number.

It is an amenable number.

22697997 is a deficient number, since it is larger than the sum of its proper divisors (11889459).

22697997 is a wasteful number, since it uses less digits than its factorization.

22697997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080867.

The product of its digits is 857304, while the sum is 51.

The square root of 22697997 is about 4764.2414926198. The cubic root of 22697997 is about 283.1364905745.

The spelling of 22697997 in words is "twenty-two million, six hundred ninety-seven thousand, nine hundred ninety-seven".