266004620 has 48 divisors (see below), whose sum is σ = 642690048. Its totient is φ = 90590400.

The previous prime is 266004611. The next prime is 266004623. The reversal of 266004620 is 26400662.

It is a super-3 number, since 3×266004620³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 266004620.

It is not an unprimeable number, because it can be changed into a prime (266004623) 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, 14849 + ... + 27431.

It is an arithmetic number, because the mean of its divisors is an integer number (13389376).

Almost surely, 2^266004620 is an apocalyptic number.

266004620 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 266004620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (321345024).

266004620 is an abundant number, since it is smaller than the sum of its proper divisors (376685428).

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

266004620 is a wasteful number, since it uses less digits than its factorization.

266004620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12750 (or 12748 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 266004620 is about 16309.6480648725. The cubic root of 266004620 is about 643.1264824587.

The spelling of 266004620 in words is "two hundred sixty-six million, four thousand, six hundred twenty".