266580040 has 16 divisors (see below), whose sum is σ = 599805180. Its totient is φ = 106632000.

The previous prime is 266580031. The next prime is 266580047. The reversal of 266580040 is 40085662.

266580040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 254147364 + 12432676 = 15942^2 + 3526^2 .

It is a junction number, because it is equal to n+sod(n) for n = 266579984 and 266580011.

It is not an unprimeable number, because it can be changed into a prime (266580047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3332211 + ... + 3332290.

Almost surely, 2^266580040 is an apocalyptic number.

266580040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266580040 is an abundant number, since it is smaller than the sum of its proper divisors (333225140).

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

266580040 is a wasteful number, since it uses less digits than its factorization.

266580040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6664512 (or 6664508 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 266580040 is about 16327.2790139692. The cubic root of 266580040 is about 643.5898845827.

The spelling of 266580040 in words is "two hundred sixty-six million, five hundred eighty thousand, forty".