1268688 has 20 divisors (see below), whose sum is σ = 3277568. Its totient is φ = 422880.

The previous prime is 1268681. The next prime is 1268713. The reversal of 1268688 is 8868621.

It is a nude number because it is divisible by every one of its digits.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1268681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13168 + ... + 13263.

2^1268688 is an apocalyptic number.

It is an amenable number.

1268688 is an abundant number, since it is smaller than the sum of its proper divisors (2008880).

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

1268688 is a wasteful number, since it uses less digits than its factorization.

1268688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26442 (or 26436 counting only the distinct ones).

The product of its digits is 36864, while the sum is 39.

The square root of 1268688 is about 1126.3605106714. The cubic root of 1268688 is about 108.2559089130.

The spelling of 1268688 in words is "one million, two hundred sixty-eight thousand, six hundred eighty-eight".