22687097 has 4 divisors (see below), whose sum is σ = 22768116. Its totient is φ = 22606080.

The previous prime is 22687073. The next prime is 22687099. The reversal of 22687097 is 79078622.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 20241001 + 2446096 = 4499^2 + 1564^2 .

It is a cyclic number.

It is not a de Polignac number, because 22687097 - 2⁶ = 22687033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22687099) 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, 40088 + ... + 40649.

It is an arithmetic number, because the mean of its divisors is an integer number (5692029).

Almost surely, 2^22687097 is an apocalyptic number.

It is an amenable number.

22687097 is a deficient number, since it is larger than the sum of its proper divisors (81019).

22687097 is an equidigital number, since it uses as much as digits as its factorization.

22687097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81018.

The product of its (nonzero) digits is 84672, while the sum is 41.

The square root of 22687097 is about 4763.0974165977. The cubic root of 22687097 is about 283.0911608494.

The spelling of 22687097 in words is "twenty-two million, six hundred eighty-seven thousand, ninety-seven".