12657005 has 8 divisors (see below), whose sum is σ = 15213312. Its totient is φ = 10109008.

The previous prime is 12656939. The next prime is 12657011. The reversal of 12657005 is 50075621.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12657005 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2012 + ... + 5418.

It is an arithmetic number, because the mean of its divisors is an integer number (1901664).

Almost surely, 2^12657005 is an apocalyptic number.

It is an amenable number.

12657005 is a deficient number, since it is larger than the sum of its proper divisors (2556307).

12657005 is an equidigital number, since it uses as much as digits as its factorization.

12657005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4155.

The product of its (nonzero) digits is 2100, while the sum is 26.

The square root of 12657005 is about 3557.6684780907. The cubic root of 12657005 is about 233.0470718505.

The spelling of 12657005 in words is "twelve million, six hundred fifty-seven thousand, five".