266222406 has 16 divisors (see below), whose sum is σ = 533055744. Its totient is φ = 88638984.

The previous prime is 266222393. The next prime is 266222419. The reversal of 266222406 is 604222662.

It is an interprime number because it is at equal distance from previous prime (266222393) and next prime (266222419).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19690 + ... + 30333.

It is an arithmetic number, because the mean of its divisors is an integer number (33315984).

Almost surely, 2^266222406 is an apocalyptic number.

266222406 is an abundant number, since it is smaller than the sum of its proper divisors (266833338).

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

266222406 is a wasteful number, since it uses less digits than its factorization.

266222406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50915.

The product of its (nonzero) digits is 13824, while the sum is 30.

The square root of 266222406 is about 16316.3232990769. The cubic root of 266222406 is about 643.3019502590.

The spelling of 266222406 in words is "two hundred sixty-six million, two hundred twenty-two thousand, four hundred six".