12564770 has 8 divisors (see below), whose sum is σ = 22616604. Its totient is φ = 5025904.

The previous prime is 12564767. The next prime is 12564781. The reversal of 12564770 is 7746521.

It can be written as a sum of positive squares in 2 ways, for example, as 10220809 + 2343961 = 3197^2 + 1531^2 .

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

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, 628229 + ... + 628248.

Almost surely, 2^12564770 is an apocalyptic number.

12564770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12564770 is a deficient number, since it is larger than the sum of its proper divisors (10051834).

12564770 is a wasteful number, since it uses less digits than its factorization.

12564770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1256484.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 12564770 is about 3544.6819321344. The cubic root of 12564770 is about 232.4795989345.

The spelling of 12564770 in words is "twelve million, five hundred sixty-four thousand, seven hundred seventy".