268686687 has 16 divisors (see below), whose sum is σ = 364508928. Its totient is φ = 176017920.

The previous prime is 268686673. The next prime is 268686689. The reversal of 268686687 is 786686862.

It is not a de Polignac number, because 268686687 - 2⁶ = 268686623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268686689) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45262 + ... + 50852.

It is an arithmetic number, because the mean of its divisors is an integer number (22781808).

Almost surely, 2^268686687 is an apocalyptic number.

268686687 is a deficient number, since it is larger than the sum of its proper divisors (95822241).

268686687 is a wasteful number, since it uses less digits than its factorization.

268686687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5870.

The product of its digits is 9289728, while the sum is 57.

The square root of 268686687 is about 16391.6651686154. The cubic root of 268686687 is about 645.2807599297.

The spelling of 268686687 in words is "two hundred sixty-eight million, six hundred eighty-six thousand, six hundred eighty-seven".