266640300 has 216 divisors, whose sum is σ = 909941760. Its totient is φ = 65059200.

The previous prime is 266640277. The next prime is 266640301. The reversal of 266640300 is 3046662.

It is not an unprimeable number, because it can be changed into a prime (266640301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 529849 + ... + 530351.

Almost surely, 2^266640300 is an apocalyptic number.

266640300 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 266640300, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (454970880).

266640300 is an abundant number, since it is smaller than the sum of its proper divisors (643301460).

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

266640300 is a wasteful number, since it uses less digits than its factorization.

266640300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 573 (or 563 counting only the distinct ones).

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

The square root of 266640300 is about 16329.1242876034. The cubic root of 266640300 is about 643.6383750906.

Adding to 266640300 its reverse (3046662), we get a palindrome (269686962).

The spelling of 266640300 in words is "two hundred sixty-six million, six hundred forty thousand, three hundred".