12664810 has 16 divisors (see below), whose sum is σ = 22848552. Its totient is φ = 5054400.

The previous prime is 12664807. The next prime is 12664829. The reversal of 12664810 is 1846621.

It can be written as a sum of positive squares in 4 ways, for example, as 10387729 + 2277081 = 3223^2 + 1509^2 .

It is a super-2 number, since 2×12664810² = 320794824672200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4240 + ... + 6580.

Almost surely, 2^12664810 is an apocalyptic number.

12664810 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12664810 is a deficient number, since it is larger than the sum of its proper divisors (10183742).

12664810 is a wasteful number, since it uses less digits than its factorization.

12664810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2889.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 12664810 is about 3558.7652353028. The cubic root of 12664810 is about 233.0949651881.

The spelling of 12664810 in words is "twelve million, six hundred sixty-four thousand, eight hundred ten".