22406567 has 4 divisors (see below), whose sum is σ = 23585880. Its totient is φ = 21227256.

The previous prime is 22406543. The next prime is 22406627. The reversal of 22406567 is 76560422.

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

It is a de Polignac number, because none of the positive numbers 2^k-22406567 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22406537) 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, 589628 + ... + 589665.

It is an arithmetic number, because the mean of its divisors is an integer number (5896470).

Almost surely, 2^22406567 is an apocalyptic number.

22406567 is a deficient number, since it is larger than the sum of its proper divisors (1179313).

22406567 is a wasteful number, since it uses less digits than its factorization.

22406567 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1179312.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 22406567 is about 4733.5575416382. The cubic root of 22406567 is about 281.9194939784.

Adding to 22406567 its reverse (76560422), we get a palindrome (98966989).

The spelling of 22406567 in words is "twenty-two million, four hundred six thousand, five hundred sixty-seven".