22616749 has 4 divisors (see below), whose sum is σ = 23947164. Its totient is φ = 21286336.

The previous prime is 22616747. The next prime is 22616761. The reversal of 22616749 is 94761622.

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

It can be written as a sum of positive squares in 2 ways, for example, as 17280649 + 5336100 = 4157^2 + 2310^2 .

It is a cyclic number.

It is not a de Polignac number, because 22616749 - 2¹ = 22616747 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 (22616747) 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, 665182 + ... + 665215.

It is an arithmetic number, because the mean of its divisors is an integer number (5986791).

Almost surely, 2^22616749 is an apocalyptic number.

It is an amenable number.

22616749 is a deficient number, since it is larger than the sum of its proper divisors (1330415).

22616749 is a wasteful number, since it uses less digits than its factorization.

22616749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1330414.

The product of its digits is 36288, while the sum is 37.

The square root of 22616749 is about 4755.7069926563. The cubic root of 22616749 is about 282.7982554957.

The spelling of 22616749 in words is "twenty-two million, six hundred sixteen thousand, seven hundred forty-nine".