22774897 has 4 divisors (see below), whose sum is σ = 22787316. Its totient is φ = 22762480.

The previous prime is 22774861. The next prime is 22774903. The reversal of 22774897 is 79847722.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 79847722 = 2 ⋅39923861.

It can be written as a sum of positive squares in 2 ways, for example, as 15968016 + 6806881 = 3996^2 + 2609^2 .

It is a cyclic number.

It is not a de Polignac number, because 22774897 - 2¹⁹ = 22250609 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22774097) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2854 + ... + 7327.

It is an arithmetic number, because the mean of its divisors is an integer number (5696829).

Almost surely, 2^22774897 is an apocalyptic number.

It is an amenable number.

22774897 is a deficient number, since it is larger than the sum of its proper divisors (12419).

22774897 is a wasteful number, since it uses less digits than its factorization.

22774897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12418.

The product of its digits is 395136, while the sum is 46.

The square root of 22774897 is about 4772.3052081777. The cubic root of 22774897 is about 283.4558822425.

The spelling of 22774897 in words is "twenty-two million, seven hundred seventy-four thousand, eight hundred ninety-seven".