268666040 has 16 divisors (see below), whose sum is σ = 604498680. Its totient is φ = 107466400.

The previous prime is 268666037. The next prime is 268666049. The reversal of 268666040 is 40666862.

It is a junction number, because it is equal to n+sod(n) for n = 268665985 and 268666003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268666049) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3358286 + ... + 3358365.

Almost surely, 2^268666040 is an apocalyptic number.

268666040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

268666040 is an abundant number, since it is smaller than the sum of its proper divisors (335832640).

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

268666040 is a wasteful number, since it uses less digits than its factorization.

268666040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6716662 (or 6716658 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 38.

The square root of 268666040 is about 16391.0353547297. The cubic root of 268666040 is about 645.2642308226.

The spelling of 268666040 in words is "two hundred sixty-eight million, six hundred sixty-six thousand, forty".