22666779 has 12 divisors (see below), whose sum is σ = 32817096. Its totient is φ = 15076032.

The previous prime is 22666757. The next prime is 22666781. The reversal of 22666779 is 97766622.

It is not a de Polignac number, because 22666779 - 2¹¹ = 22664731 is a prime.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (22666739) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1507 + ... + 6899.

It is an arithmetic number, because the mean of its divisors is an integer number (2734758).

Almost surely, 2^22666779 is an apocalyptic number.

22666779 is a deficient number, since it is larger than the sum of its proper divisors (10150317).

22666779 is a wasteful number, since it uses less digits than its factorization.

22666779 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5866 (or 5863 counting only the distinct ones).

The product of its digits is 381024, while the sum is 45.

The square root of 22666779 is about 4760.9640830403. The cubic root of 22666779 is about 283.0066258068.

It can be divided in two parts, 2266 and 6779, that added together give a triangular number (9045 = T₁₃₄).

The spelling of 22666779 in words is "twenty-two million, six hundred sixty-six thousand, seven hundred seventy-nine".