266664084 has 24 divisors (see below), whose sum is σ = 622997088. Its totient is φ = 88776480.

The previous prime is 266664071. The next prime is 266664089. The reversal of 266664084 is 480466662.

It is a super-4 number, since 4×266664084⁴ (a number of 35 digits) contains 4444 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266664089) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3682 + ... + 23385.

It is an arithmetic number, because the mean of its divisors is an integer number (25958212).

Almost surely, 2^266664084 is an apocalyptic number.

It is an amenable number.

266664084 is an abundant number, since it is smaller than the sum of its proper divisors (356333004).

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

266664084 is a wasteful number, since it uses less digits than its factorization.

266664084 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27895 (or 27893 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 42.

The square root of 266664084 is about 16329.8525406692. The cubic root of 266664084 is about 643.6575117827.

The spelling of 266664084 in words is "two hundred sixty-six million, six hundred sixty-four thousand, eighty-four".