266663172 has 24 divisors (see below), whose sum is σ = 624937600. Its totient is φ = 88498656.

The previous prime is 266663171. The next prime is 266663203. The reversal of 266663172 is 271366662.

It is a super-2 number, since 2×266663172² = 142218494602203168, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 266663172.

It is not an unprimeable number, because it can be changed into a prime (266663171) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45772 + ... + 51267.

Almost surely, 2^266663172 is an apocalyptic number.

It is an amenable number.

266663172 is an abundant number, since it is smaller than the sum of its proper divisors (358274428).

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

266663172 is a wasteful number, since it uses less digits than its factorization.

266663172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97275 (or 97273 counting only the distinct ones).

The product of its digits is 108864, while the sum is 39.

The square root of 266663172 is about 16329.8246163270. The cubic root of 266663172 is about 643.6567780052.

The spelling of 266663172 in words is "two hundred sixty-six million, six hundred sixty-three thousand, one hundred seventy-two".