1306865 has 8 divisors (see below), whose sum is σ = 1792320. Its totient is φ = 896112.

The previous prime is 1306853. The next prime is 1306873. The reversal of 1306865 is 5686031.

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

It is not a de Polignac number, because 1306865 - 2⁴ = 1306849 is a prime.

It is a super-2 number, since 2×1306865² = 3415792256450, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18635 + ... + 18704.

It is an arithmetic number, because the mean of its divisors is an integer number (224040).

2^1306865 is an apocalyptic number.

It is an amenable number.

1306865 is a deficient number, since it is larger than the sum of its proper divisors (485455).

1306865 is an equidigital number, since it uses as much as digits as its factorization.

1306865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37351.

The product of its (nonzero) digits is 4320, while the sum is 29.

The square root of 1306865 is about 1143.1819627688. The cubic root of 1306865 is about 109.3310642582.

The spelling of 1306865 in words is "one million, three hundred six thousand, eight hundred sixty-five".