266664222 has 48 divisors (see below), whose sum is σ = 652045680. Its totient is φ = 78019200.

The previous prime is 266664197. The next prime is 266664241. The reversal of 266664222 is 222466662.

It is a happy number.

It is a super-2 number, since 2×266664222² = 142219614589730568, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17479 + ... + 28962.

It is an arithmetic number, because the mean of its divisors is an integer number (13584285).

Almost surely, 2^266664222 is an apocalyptic number.

266664222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

266664222 is an abundant number, since it is smaller than the sum of its proper divisors (385381458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

266664222 is a wasteful number, since it uses less digits than its factorization.

266664222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46489 (or 46486 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 266664222 is about 16329.8567660589. The cubic root of 266664222 is about 643.6576228146.

The spelling of 266664222 in words is "two hundred sixty-six million, six hundred sixty-four thousand, two hundred twenty-two".