266670 has 24 divisors (see below), whose sum is σ = 693576. Its totient is φ = 71088.

The previous prime is 266663. The next prime is 266671. The reversal of 266670 is 76662.

It is a super-2 number, since 2×266670² = 142225777800, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (266671) by changing a digit.

266670 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1392 + ... + 1571.

It is an arithmetic number, because the mean of its divisors is an integer number (28899).

2²⁶⁶⁶⁷⁰ is an apocalyptic number.

266670 is an abundant number, since it is smaller than the sum of its proper divisors (426906).

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

266670 is a wasteful number, since it uses less digits than its factorization.

266670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2976 (or 2973 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 266670 is about 516.4010069704. The cubic root of 266670 is about 64.3662271641.

The spelling of 266670 in words is "two hundred sixty-six thousand, six hundred seventy".