12570785 has 4 divisors (see below), whose sum is σ = 15084948. Its totient is φ = 10056624.

The previous prime is 12570781. The next prime is 12570809. The reversal of 12570785 is 58707521.

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

It can be written as a sum of positive squares in 2 ways, for example, as 2027776 + 10543009 = 1424^2 + 3247^2 .

It is a cyclic number.

It is not a de Polignac number, because 12570785 - 2² = 12570781 is a prime.

It is a super-3 number, since 3×12570785³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12570781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1257074 + ... + 1257083.

It is an arithmetic number, because the mean of its divisors is an integer number (3771237).

Almost surely, 2^12570785 is an apocalyptic number.

It is an amenable number.

12570785 is a deficient number, since it is larger than the sum of its proper divisors (2514163).

12570785 is an equidigital number, since it uses as much as digits as its factorization.

12570785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2514162.

The product of its (nonzero) digits is 19600, while the sum is 35.

The square root of 12570785 is about 3545.5302847388. The cubic root of 12570785 is about 232.5166905195.

The spelling of 12570785 in words is "twelve million, five hundred seventy thousand, seven hundred eighty-five".