266570864 has 40 divisors (see below), whose sum is σ = 594545280. Its totient is φ = 113416128.

The previous prime is 266570833. The next prime is 266570879. The reversal of 266570864 is 468075662.

It is a zygodrome in base 2.

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, 7007 + ... + 24129.

It is an arithmetic number, because the mean of its divisors is an integer number (14863632).

Almost surely, 2^266570864 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266570864, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (297272640).

266570864 is an abundant number, since it is smaller than the sum of its proper divisors (327974416).

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

266570864 is a wasteful number, since it uses less digits than its factorization.

266570864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17277 (or 17271 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 44.

The square root of 266570864 is about 16326.9980094321. The cubic root of 266570864 is about 643.5825001232.

The spelling of 266570864 in words is "two hundred sixty-six million, five hundred seventy thousand, eight hundred sixty-four".