12905807 has 8 divisors (see below), whose sum is σ = 13618560. Its totient is φ = 12196440.

The previous prime is 12905803. The next prime is 12905861. The reversal of 12905807 is 70850921.

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 12905807 - 2² = 12905803 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 (12905803) 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, 12638 + ... + 13620.

It is an arithmetic number, because the mean of its divisors is an integer number (1702320).

Almost surely, 2^12905807 is an apocalyptic number.

12905807 is a deficient number, since it is larger than the sum of its proper divisors (712753).

12905807 is an equidigital number, since it uses as much as digits as its factorization.

12905807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1693.

The product of its (nonzero) digits is 5040, while the sum is 32.

The square root of 12905807 is about 3592.4653095054. The cubic root of 12905807 is about 234.5641960803.

The spelling of 12905807 in words is "twelve million, nine hundred five thousand, eight hundred seven".