22145697 has 48 divisors (see below), whose sum is σ = 40219200. Its totient is φ = 11975040.

The previous prime is 22145663. The next prime is 22145723. The reversal of 22145697 is 79654122.

It is not a de Polignac number, because 22145697 - 2⁷ = 22145569 is a prime.

It is not an unprimeable number, because it can be changed into a prime (22145657) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 24697 + ... + 25577.

It is an arithmetic number, because the mean of its divisors is an integer number (837900).

Almost surely, 2^22145697 is an apocalyptic number.

22145697 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

22145697 is a deficient number, since it is larger than the sum of its proper divisors (18073503).

22145697 is a wasteful number, since it uses less digits than its factorization.

22145697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 923 (or 910 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 22145697 is about 4705.9214825579. The cubic root of 22145697 is about 280.8211312536.

The spelling of 22145697 in words is "twenty-two million, one hundred forty-five thousand, six hundred ninety-seven".