266561060 has 12 divisors (see below), whose sum is σ = 559778268. Its totient is φ = 106624416.

The previous prime is 266561059. The next prime is 266561081. The reversal of 266561060 is 60165662.

It can be written as a sum of positive squares in 2 ways, for example, as 126517504 + 140043556 = 11248^2 + 11834^2 .

It is a hoax number, since the sum of its digits (32) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6664007 + ... + 6664046.

It is an arithmetic number, because the mean of its divisors is an integer number (46648189).

Almost surely, 2^266561060 is an apocalyptic number.

266561060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266561060 is an abundant number, since it is smaller than the sum of its proper divisors (293217208).

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

266561060 is a wasteful number, since it uses less digits than its factorization.

266561060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13328062 (or 13328060 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 266561060 is about 16326.6977677668. The cubic root of 266561060 is about 643.5746100884.

The spelling of 266561060 in words is "two hundred sixty-six million, five hundred sixty-one thousand, sixty".