12975785 has 4 divisors (see below), whose sum is σ = 15570948. Its totient is φ = 10380624.

The previous prime is 12975779. The next prime is 12975791. The reversal of 12975785 is 58757921.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12975779) and next prime (12975791).

It can be written as a sum of positive squares in 2 ways, for example, as 3636649 + 9339136 = 1907^2 + 3056^2 .

It is a cyclic number.

It is not a de Polignac number, because 12975785 - 2⁴ = 12975769 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1297574 + ... + 1297583.

It is an arithmetic number, because the mean of its divisors is an integer number (3892737).

Almost surely, 2^12975785 is an apocalyptic number.

It is an amenable number.

12975785 is a deficient number, since it is larger than the sum of its proper divisors (2595163).

12975785 is an equidigital number, since it uses as much as digits as its factorization.

12975785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2595162.

The product of its digits is 176400, while the sum is 44.

The square root of 12975785 is about 3602.1916939552. The cubic root of 12975785 is about 234.9873842631.

The spelling of 12975785 in words is "twelve million, nine hundred seventy-five thousand, seven hundred eighty-five".