266870980 has 12 divisors (see below), whose sum is σ = 560429100. Its totient is φ = 106748384.

The previous prime is 266870957. The next prime is 266870993. The reversal of 266870980 is 89078662.

It can be written as a sum of positive squares in 2 ways, for example, as 97298496 + 169572484 = 9864^2 + 13022^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 266870980.

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, 6671755 + ... + 6671794.

It is an arithmetic number, because the mean of its divisors is an integer number (46702425).

Almost surely, 2^266870980 is an apocalyptic number.

266870980 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266870980 is an abundant number, since it is smaller than the sum of its proper divisors (293558120).

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

266870980 is a wasteful number, since it uses less digits than its factorization.

266870980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13343558 (or 13343556 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 266870980 is about 16336.1862134343. The cubic root of 266870980 is about 643.8239330677.

The spelling of 266870980 in words is "two hundred sixty-six million, eight hundred seventy thousand, nine hundred eighty".