266606020 has 48 divisors (see below), whose sum is σ = 577640448. Its totient is φ = 103299840.

The previous prime is 266605987. The next prime is 266606023. The reversal of 266606020 is 20606662.

266606020 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 266606020.

It is not an unprimeable number, because it can be changed into a prime (266606023) 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, 108000 + ... + 110440.

It is an arithmetic number, because the mean of its divisors is an integer number (12034176).

Almost surely, 2^266606020 is an apocalyptic number.

266606020 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 266606020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288820224).

266606020 is an abundant number, since it is smaller than the sum of its proper divisors (311034428).

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

266606020 is a wasteful number, since it uses less digits than its factorization.

266606020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2620 (or 2618 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 266606020 is about 16328.0745956160. The cubic root of 266606020 is about 643.6107912768.

The spelling of 266606020 in words is "two hundred sixty-six million, six hundred six thousand, twenty".