266560416 has 48 divisors (see below), whose sum is σ = 777470400. Its totient is φ = 88853184.

The previous prime is 266560403. The next prime is 266560417. The reversal of 266560416 is 614065662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266560417) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 153396 + ... + 155123.

It is an arithmetic number, because the mean of its divisors is an integer number (16197300).

Almost surely, 2^266560416 is an apocalyptic number.

It is an amenable number.

266560416 is an abundant number, since it is smaller than the sum of its proper divisors (510909984).

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

266560416 is a wasteful number, since it uses less digits than its factorization.

266560416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 308538 (or 308524 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 266560416 is about 16326.6780454568. The cubic root of 266560416 is about 643.5740918052.

The spelling of 266560416 in words is "two hundred sixty-six million, five hundred sixty thousand, four hundred sixteen".