266686772 has 24 divisors (see below), whose sum is σ = 509718720. Its totient is φ = 121080960.

The previous prime is 266686741. The next prime is 266686801. The reversal of 266686772 is 277686662.

266686772 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266686772² = 142243668719559968, 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 266686772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41393 + ... + 47399.

It is an arithmetic number, because the mean of its divisors is an integer number (21238280).

Almost surely, 2^266686772 is an apocalyptic number.

266686772 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

266686772 is a deficient number, since it is larger than the sum of its proper divisors (243031948).

266686772 is a wasteful number, since it uses less digits than its factorization.

266686772 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7031 (or 7029 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 50.

The square root of 266686772 is about 16330.5472045489. The cubic root of 266686772 is about 643.6757655688.

The spelling of 266686772 in words is "two hundred sixty-six million, six hundred eighty-six thousand, seven hundred seventy-two".