12607709 has 4 divisors (see below), whose sum is σ = 12618780. Its totient is φ = 12596640.

The previous prime is 12607691. The next prime is 12607723. The reversal of 12607709 is 90770621.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 90770621 = 2213 ⋅41017.

It can be written as a sum of positive squares in 2 ways, for example, as 7963684 + 4644025 = 2822^2 + 2155^2 .

It is a cyclic number.

It is not a de Polignac number, because 12607709 - 2⁸ = 12607453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12607789) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3602 + ... + 6179.

It is an arithmetic number, because the mean of its divisors is an integer number (3154695).

Almost surely, 2^12607709 is an apocalyptic number.

It is an amenable number.

12607709 is a deficient number, since it is larger than the sum of its proper divisors (11071).

12607709 is an equidigital number, since it uses as much as digits as its factorization.

12607709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11070.

The product of its (nonzero) digits is 5292, while the sum is 32.

The square root of 12607709 is about 3550.7335861762. The cubic root of 12607709 is about 232.7441240489.

The spelling of 12607709 in words is "twelve million, six hundred seven thousand, seven hundred nine".