22068791 has 4 divisors (see below), whose sum is σ = 22127400. Its totient is φ = 22010184.

The previous prime is 22068779. The next prime is 22068793. The reversal of 22068791 is 19786022.

It is a happy number.

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 22068791 - 2⁶ = 22068727 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 (22068793) 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, 28736 + ... + 29493.

It is an arithmetic number, because the mean of its divisors is an integer number (5531850).

Almost surely, 2^22068791 is an apocalyptic number.

22068791 is a deficient number, since it is larger than the sum of its proper divisors (58609).

22068791 is an equidigital number, since it uses as much as digits as its factorization.

22068791 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58608.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 22068791 is about 4697.7431815713. The cubic root of 22068791 is about 280.4956823528.

The spelling of 22068791 in words is "twenty-two million, sixty-eight thousand, seven hundred ninety-one".