1306887 has 8 divisors (see below), whose sum is σ = 1748736. Its totient is φ = 868152.

The previous prime is 1306873. The next prime is 1306889. The reversal of 1306887 is 7886031.

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

It is not a de Polignac number, because 1306887 - 2⁷ = 1306759 is a prime.

1306887 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306889) 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 7 ways as a sum of consecutive naturals, for example, 508 + ... + 1694.

It is an arithmetic number, because the mean of its divisors is an integer number (218592).

2^1306887 is an apocalyptic number.

1306887 is a deficient number, since it is larger than the sum of its proper divisors (441849).

1306887 is a wasteful number, since it uses less digits than its factorization.

1306887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1557.

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 1306887 is about 1143.1915849935. The cubic root of 1306887 is about 109.3316777544.

The spelling of 1306887 in words is "one million, three hundred six thousand, eight hundred eighty-seven".