12647964 has 24 divisors (see below), whose sum is σ = 33728128. Its totient is φ = 3613680.

The previous prime is 12647959. The next prime is 12647989. The reversal of 12647964 is 46974621.

12647964 = T₁₆₇₂ + T₁₆₇₃ + ... + T₁₆₈₀.

It is a happy number.

12647964 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a congruent number.

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, 75202 + ... + 75369.

Almost surely, 2^12647964 is an apocalyptic number.

12647964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12647964 is an abundant number, since it is smaller than the sum of its proper divisors (21080164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12647964 is a wasteful number, since it uses less digits than its factorization.

12647964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150585 (or 150583 counting only the distinct ones).

The product of its digits is 72576, while the sum is 39.

The square root of 12647964 is about 3556.3976155655. The cubic root of 12647964 is about 232.9915695035.

The spelling of 12647964 in words is "twelve million, six hundred forty-seven thousand, nine hundred sixty-four".