266600340 has 36 divisors (see below), whose sum is σ = 808688244. Its totient is φ = 71093376.

The previous prime is 266600339. The next prime is 266600353. The reversal of 266600340 is 43006662.

It can be written as a sum of positive squares in 2 ways, for example, as 57335184 + 209265156 = 7572^2 + 14466^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 740377 + ... + 740736.

Almost surely, 2^266600340 is an apocalyptic number.

266600340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266600340 is an abundant number, since it is smaller than the sum of its proper divisors (542087904).

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

266600340 is a wasteful number, since it uses less digits than its factorization.

266600340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1481128 (or 1481123 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 266600340 is about 16327.9006611383. The cubic root of 266600340 is about 643.6062205683.

The spelling of 266600340 in words is "two hundred sixty-six million, six hundred thousand, three hundred forty".