22668451 has 4 divisors (see below), whose sum is σ = 24412192. Its totient is φ = 20924712.

The previous prime is 22668427. The next prime is 22668461. The reversal of 22668451 is 15486622.

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

It is a cyclic number.

It is not a de Polignac number, because 22668451 - 2⁷ = 22668323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (22668461) 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 3 ways as a sum of consecutive naturals, for example, 871851 + ... + 871876.

It is an arithmetic number, because the mean of its divisors is an integer number (6103048).

Almost surely, 2^22668451 is an apocalyptic number.

22668451 is a deficient number, since it is larger than the sum of its proper divisors (1743741).

22668451 is a wasteful number, since it uses less digits than its factorization.

22668451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1743740.

The product of its digits is 23040, while the sum is 34.

The square root of 22668451 is about 4761.1396744897. The cubic root of 22668451 is about 283.0135842347.

The spelling of 22668451 in words is "twenty-two million, six hundred sixty-eight thousand, four hundred fifty-one".