12320709 has 8 divisors (see below), whose sum is σ = 17141952. Its totient is φ = 7856640.

The previous prime is 12320677. The next prime is 12320713. The reversal of 12320709 is 90702321.

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

It is not a de Polignac number, because 12320709 - 2⁵ = 12320677 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320309) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 89212 + ... + 89349.

It is an arithmetic number, because the mean of its divisors is an integer number (2142744).

Almost surely, 2^12320709 is an apocalyptic number.

It is an amenable number.

12320709 is a deficient number, since it is larger than the sum of its proper divisors (4821243).

12320709 is a wasteful number, since it uses less digits than its factorization.

12320709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178587.

The product of its (nonzero) digits is 756, while the sum is 24.

The square root of 12320709 is about 3510.0867510647. The cubic root of 12320709 is about 230.9645004574.

The spelling of 12320709 in words is "twelve million, three hundred twenty thousand, seven hundred nine".