266650560 has 336 divisors, whose sum is σ = 1055583360. Its totient is φ = 61102080.

The previous prime is 266650529. The next prime is 266650589. The reversal of 266650560 is 65056662.

266650560 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266650560² = 142205042296627200, which contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 601699 + ... + 602141.

Almost surely, 2^266650560 is an apocalyptic number.

266650560 is a gapful number since it is divisible by the number (20) 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 266650560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (527791680).

266650560 is an abundant number, since it is smaller than the sum of its proper divisors (788932800).

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

266650560 is a wasteful number, since it uses less digits than its factorization.

266650560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 496 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 64800, while the sum is 36.

The square root of 266650560 is about 16329.4384471726. The cubic root of 266650560 is about 643.6466304631.

The spelling of 266650560 in words is "two hundred sixty-six million, six hundred fifty thousand, five hundred sixty".