266141660 has 48 divisors (see below), whose sum is σ = 574584192. Its totient is φ = 103488000.

The previous prime is 266141653. The next prime is 266141669. The reversal of 266141660 is 66141662.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266141669) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 379310 + ... + 380010.

It is an arithmetic number, because the mean of its divisors is an integer number (11970504).

Almost surely, 2^266141660 is an apocalyptic number.

266141660 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 266141660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (287292096).

266141660 is an abundant number, since it is smaller than the sum of its proper divisors (308442532).

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

266141660 is a wasteful number, since it uses less digits than its factorization.

266141660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1214 (or 1212 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 266141660 is about 16313.8487181903. The cubic root of 266141660 is about 643.2369052558.

The spelling of 266141660 in words is "two hundred sixty-six million, one hundred forty-one thousand, six hundred sixty".