1307885 has 4 divisors (see below), whose sum is σ = 1569468. Its totient is φ = 1046304.

The previous prime is 1307863. The next prime is 1307893. The reversal of 1307885 is 5887031.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 538756 + 769129 = 734^2 + 877^2 .

It is a cyclic number.

It is not a de Polignac number, because 1307885 - 2⁶ = 1307821 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 130784 + ... + 130793.

It is an arithmetic number, because the mean of its divisors is an integer number (392367).

2^1307885 is an apocalyptic number.

It is an amenable number.

1307885 is a deficient number, since it is larger than the sum of its proper divisors (261583).

1307885 is an equidigital number, since it uses as much as digits as its factorization.

1307885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261582.

The product of its (nonzero) digits is 6720, while the sum is 32.

The square root of 1307885 is about 1143.6279989577. The cubic root of 1307885 is about 109.3595009330.

The spelling of 1307885 in words is "one million, three hundred seven thousand, eight hundred eighty-five".