266648 has 8 divisors (see below), whose sum is σ = 499980. Its totient is φ = 133320.

The previous prime is 266647. The next prime is 266663. The reversal of 266648 is 846662.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×266648² = 142202311808, which contains 22 as substring.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 266648.

It is not an unprimeable number, because it can be changed into a prime (266641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16658 + ... + 16673.

2²⁶⁶⁶⁴⁸ is an apocalyptic number.

It is an amenable number.

266648 is a deficient number, since it is larger than the sum of its proper divisors (233332).

266648 is a wasteful number, since it uses less digits than its factorization.

266648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33337 (or 33333 counting only the distinct ones).

The product of its digits is 13824, while the sum is 32.

The square root of 266648 is about 516.3797052557. The cubic root of 266648 is about 64.3644570663.

It can be divided in two parts, 26664 and 8, that multiplied together give a palindrome (213312).

The spelling of 266648 in words is "two hundred sixty-six thousand, six hundred forty-eight".