22687161 has 8 divisors (see below), whose sum is σ = 34570944. Its totient is φ = 12964080.

The previous prime is 22687157. The next prime is 22687199. The reversal of 22687161 is 16178622.

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

It is not a de Polignac number, because 22687161 - 2² = 22687157 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (22682161) 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, 540150 + ... + 540191.

It is an arithmetic number, because the mean of its divisors is an integer number (4321368).

Almost surely, 2^22687161 is an apocalyptic number.

22687161 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

22687161 is a deficient number, since it is larger than the sum of its proper divisors (11883783).

22687161 is a wasteful number, since it uses less digits than its factorization.

22687161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1080351.

The product of its digits is 8064, while the sum is 33.

The square root of 22687161 is about 4763.1041349103. The cubic root of 22687161 is about 283.0914270479.

The spelling of 22687161 in words is "twenty-two million, six hundred eighty-seven thousand, one hundred sixty-one".