253266666 has 8 divisors (see below), whose sum is σ = 506533344. Its totient is φ = 84422220.

The previous prime is 253266647. The next prime is 253266679. The reversal of 253266666 is 666662352.

253266666 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

253266666 is an admirable number.

253266666 is a modest number, since divided by 66666 gives 2532 as remainder.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21105550 + ... + 21105561.

It is an arithmetic number, because the mean of its divisors is an integer number (63316668).

Almost surely, 2^253266666 is an apocalyptic number.

253266666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

253266666 is a wasteful number, since it uses less digits than its factorization.

253266666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42211116.

The product of its digits is 466560, while the sum is 42.

The square root of 253266666 is about 15914.3540867985. The cubic root of 253266666 is about 632.6924875670.

The spelling of 253266666 in words is "two hundred fifty-three million, two hundred sixty-six thousand, six hundred sixty-six".