12643570 has 32 divisors (see below), whose sum is σ = 23442048. Its totient is φ = 4908288.

The previous prime is 12643549. The next prime is 12643571. The reversal of 12643570 is 7534621.

12643570 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (12643571) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 75627 + ... + 75793.

It is an arithmetic number, because the mean of its divisors is an integer number (732564).

Almost surely, 2^12643570 is an apocalyptic number.

12643570 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12643570 is a deficient number, since it is larger than the sum of its proper divisors (10798478).

12643570 is a wasteful number, since it uses less digits than its factorization.

12643570 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 354.

The product of its (nonzero) digits is 5040, while the sum is 28.

The square root of 12643570 is about 3555.7798019562. The cubic root of 12643570 is about 232.9645853571.

The spelling of 12643570 in words is "twelve million, six hundred forty-three thousand, five hundred seventy".