266027664 has 120 divisors (see below), whose sum is σ = 841657440. Its totient is φ = 71995392.

The previous prime is 266027659. The next prime is 266027711. The reversal of 266027664 is 466720662.

266027664 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 41712 + ... + 47664.

It is an arithmetic number, because the mean of its divisors is an integer number (7013812).

Almost surely, 2^266027664 is an apocalyptic number.

266027664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 266027664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420828720).

266027664 is an abundant number, since it is smaller than the sum of its proper divisors (575629776).

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

266027664 is a wasteful number, since it uses less digits than its factorization.

266027664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5997 (or 5984 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 39.

The square root of 266027664 is about 16310.3545025852. The cubic root of 266027664 is about 643.1450532874.

The spelling of 266027664 in words is "two hundred sixty-six million, twenty-seven thousand, six hundred sixty-four".