22668457 has 8 divisors (see below), whose sum is σ = 26607296. Its totient is φ = 18904752.

The previous prime is 22668427. The next prime is 22668461. The reversal of 22668457 is 75486622.

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

It is a cyclic number.

It is not a de Polignac number, because 22668457 - 2¹⁹ = 22144169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22668407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43503 + ... + 44020.

It is an arithmetic number, because the mean of its divisors is an integer number (3325912).

Almost surely, 2^22668457 is an apocalyptic number.

It is an amenable number.

22668457 is a deficient number, since it is larger than the sum of its proper divisors (3938839).

22668457 is an equidigital number, since it uses as much as digits as its factorization.

22668457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87567.

The product of its digits is 161280, while the sum is 40.

The square root of 22668457 is about 4761.1403045909. The cubic root of 22668457 is about 283.0136092046.

The spelling of 22668457 in words is "twenty-two million, six hundred sixty-eight thousand, four hundred fifty-seven".