1268687 has 8 divisors (see below), whose sum is σ = 1526400. Its totient is φ = 1030104.

The previous prime is 1268681. The next prime is 1268713. The reversal of 1268687 is 7868621.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1268687 - 2⁶ = 1268623 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 1268687.

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 polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4637 + ... + 4902.

It is an arithmetic number, because the mean of its divisors is an integer number (190800).

2^1268687 is an apocalyptic number.

1268687 is a deficient number, since it is larger than the sum of its proper divisors (257713).

1268687 is an equidigital number, since it uses as much as digits as its factorization.

1268687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9565.

The product of its digits is 32256, while the sum is 38.

The square root of 1268687 is about 1126.3600667637. The cubic root of 1268687 is about 108.2558804700.

The spelling of 1268687 in words is "one million, two hundred sixty-eight thousand, six hundred eighty-seven".