12730605 has 8 divisors (see below), whose sum is σ = 20368992. Its totient is φ = 6789648.

The previous prime is 12730583. The next prime is 12730609. The reversal of 12730605 is 50603721.

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

It is not a de Polignac number, because 12730605 - 2⁵ = 12730573 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12730609) 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, 424339 + ... + 424368.

It is an arithmetic number, because the mean of its divisors is an integer number (2546124).

Almost surely, 2^12730605 is an apocalyptic number.

12730605 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12730605 is a deficient number, since it is larger than the sum of its proper divisors (7638387).

12730605 is an equidigital number, since it uses as much as digits as its factorization.

12730605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848715.

The product of its (nonzero) digits is 1260, while the sum is 24.

The square root of 12730605 is about 3567.9973374430. The cubic root of 12730605 is about 233.4979190267.

The spelling of 12730605 in words is "twelve million, seven hundred thirty thousand, six hundred five".