266865900 has 72 divisors (see below), whose sum is σ = 882443520. Its totient is φ = 60997440.

The previous prime is 266865829. The next prime is 266865913. The reversal of 266865900 is 9568662.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61440 + ... + 65639.

It is an arithmetic number, because the mean of its divisors is an integer number (12256160).

Almost surely, 2^266865900 is an apocalyptic number.

266865900 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266865900 is an abundant number, since it is smaller than the sum of its proper divisors (615577620).

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

266865900 is a wasteful number, since it uses less digits than its factorization.

266865900 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127103 (or 127096 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 266865900 is about 16336.0307296479. The cubic root of 266865900 is about 643.8198478897.

The spelling of 266865900 in words is "two hundred sixty-six million, eight hundred sixty-five thousand, nine hundred".