12620909 has 8 divisors (see below), whose sum is σ = 14449920. Its totient is φ = 10798416.

The previous prime is 12620891. The next prime is 12620939. The reversal of 12620909 is 90902621.

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

It is a cyclic number.

It is not a de Polignac number, because 12620909 - 2⁸ = 12620653 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 (12620939) 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, 3692 + ... + 6234.

It is an arithmetic number, because the mean of its divisors is an integer number (1806240).

Almost surely, 2^12620909 is an apocalyptic number.

It is an amenable number.

12620909 is a deficient number, since it is larger than the sum of its proper divisors (1829011).

12620909 is an equidigital number, since it uses as much as digits as its factorization.

12620909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3259.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 12620909 is about 3552.5918707333. The cubic root of 12620909 is about 232.8253217478.

The spelling of 12620909 in words is "twelve million, six hundred twenty thousand, nine hundred nine".