12641766 has 32 divisors (see below), whose sum is σ = 26673408. Its totient is φ = 3986400.

The previous prime is 12641749. The next prime is 12641771. The reversal of 12641766 is 66714621.

12641766 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13485 + ... + 14391.

It is an arithmetic number, because the mean of its divisors is an integer number (833544).

Almost surely, 2^12641766 is an apocalyptic number.

12641766 is an abundant number, since it is smaller than the sum of its proper divisors (14031642).

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

12641766 is a wasteful number, since it uses less digits than its factorization.

12641766 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1036.

The product of its digits is 12096, while the sum is 33.

The square root of 12641766 is about 3555.5261214059. The cubic root of 12641766 is about 232.9535049397.

The spelling of 12641766 in words is "twelve million, six hundred forty-one thousand, seven hundred sixty-six".