266266560 has 112 divisors (see below), whose sum is σ = 966191616. Its totient is φ = 60859392.

The previous prime is 266266547. The next prime is 266266601. The reversal of 266266560 is 65662662.

It is a tau number, because it is divible by the number of its divisors (112).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13092 + ... + 26531.

Almost surely, 2^266266560 is an apocalyptic number.

266266560 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266266560 is an abundant number, since it is smaller than the sum of its proper divisors (699925056).

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

266266560 is a wasteful number, since it uses less digits than its factorization.

266266560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39650 (or 39640 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 39.

The square root of 266266560 is about 16317.6763051606. The cubic root of 266266560 is about 643.3375129859.

The spelling of 266266560 in words is "two hundred sixty-six million, two hundred sixty-six thousand, five hundred sixty".