1309707 has 12 divisors (see below), whose sum is σ = 2162160. Its totient is φ = 748368.

The previous prime is 1309699. The next prime is 1309709. The reversal of 1309707 is 7079031.

It is not a de Polignac number, because 1309707 - 2³ = 1309699 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1309709) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10332 + ... + 10457.

It is an arithmetic number, because the mean of its divisors is an integer number (180180).

2^1309707 is an apocalyptic number.

1309707 is a deficient number, since it is larger than the sum of its proper divisors (852453).

1309707 is a wasteful number, since it uses less digits than its factorization.

1309707 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20802 (or 20799 counting only the distinct ones).

The product of its (nonzero) digits is 1323, while the sum is 27.

The square root of 1309707 is about 1144.4243094237. The cubic root of 1309707 is about 109.4102598699.

It can be divided in two parts, 1309 and 707, that added together give a triangular number (2016 = T₆₃).

The spelling of 1309707 in words is "one million, three hundred nine thousand, seven hundred seven".