266685968 has 20 divisors (see below), whose sum is σ = 517385040. Its totient is φ = 133167264.

The previous prime is 266685949. The next prime is 266685977. The reversal of 266685968 is 869586662.

266685968 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×266685968² = 142242811056194048, which contains 22 as substring.

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, 2003 + ... + 23181.

It is an arithmetic number, because the mean of its divisors is an integer number (25869252).

Almost surely, 2^266685968 is an apocalyptic number.

It is an amenable number.

266685968 is a deficient number, since it is larger than the sum of its proper divisors (250699072).

266685968 is a wasteful number, since it uses less digits than its factorization.

266685968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21974 (or 21968 counting only the distinct ones).

The product of its digits is 7464960, while the sum is 56.

The square root of 266685968 is about 16330.5225880864. The cubic root of 266685968 is about 643.6751187228.

The spelling of 266685968 in words is "two hundred sixty-six million, six hundred eighty-five thousand, nine hundred sixty-eight".