26222666 has 4 divisors (see below), whose sum is σ = 39334002. Its totient is φ = 13111332.

The previous prime is 26222627. The next prime is 26222671. The reversal of 26222666 is 66622262.

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

It can be written as a sum of positive squares in only one way, i.e., 23804641 + 2418025 = 4879^2 + 1555^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555665 + ... + 6555668.

Almost surely, 2^26222666 is an apocalyptic number.

26222666 is a deficient number, since it is larger than the sum of its proper divisors (13111336).

26222666 is a wasteful number, since it uses less digits than its factorization.

26222666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13111335.

The product of its digits is 20736, while the sum is 32.

The square root of 26222666 is about 5120.8071629383. The cubic root of 26222666 is about 297.0929055183.

The spelling of 26222666 in words is "twenty-six million, two hundred twenty-two thousand, six hundred sixty-six".