1288679 has 8 divisors (see below), whose sum is σ = 1481088. Its totient is φ = 1098360.

The previous prime is 1288657. The next prime is 1288691. The reversal of 1288679 is 9768821.

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

It is a cyclic number.

It is not a de Polignac number, because 1288679 - 2⁸ = 1288423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1184 + ... + 1994.

It is an arithmetic number, because the mean of its divisors is an integer number (185136).

2^1288679 is an apocalyptic number.

1288679 is a deficient number, since it is larger than the sum of its proper divisors (192409).

1288679 is an equidigital number, since it uses as much as digits as its factorization.

1288679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1045.

The product of its digits is 48384, while the sum is 41.

The square root of 1288679 is about 1135.1999823820. The cubic root of 1288679 is about 108.8215524183.

The spelling of 1288679 in words is "one million, two hundred eighty-eight thousand, six hundred seventy-nine".