266620 has 12 divisors (see below), whose sum is σ = 559944. Its totient is φ = 106640.

The previous prime is 266603. The next prime is 266633. The reversal of 266620 is 26662.

It is a junction number, because it is equal to n+sod(n) for n = 266591 and 266600.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6646 + ... + 6685.

It is an arithmetic number, because the mean of its divisors is an integer number (46662).

2²⁶⁶⁶²⁰ is an apocalyptic number.

266620 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

266620 is an abundant number, since it is smaller than the sum of its proper divisors (293324).

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

266620 is a wasteful number, since it uses less digits than its factorization.

266620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13340 (or 13338 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 266620 is about 516.3525927116. The cubic root of 266620 is about 64.3622040737.

The spelling of 266620 in words is "two hundred sixty-six thousand, six hundred twenty".