12763664 has 10 divisors (see below), whose sum is σ = 24729630. Its totient is φ = 6381824.

The previous prime is 12763637. The next prime is 12763693. The reversal of 12763664 is 46636721.

It can be written as a sum of positive squares in only one way, i.e., 6553600 + 6210064 = 2560^2 + 2492^2 .

It is a super-2 number, since 2×12763664² = 325822237409792, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 398849 + ... + 398880.

It is an arithmetic number, because the mean of its divisors is an integer number (2472963).

Almost surely, 2^12763664 is an apocalyptic number.

It is an amenable number.

12763664 is a deficient number, since it is larger than the sum of its proper divisors (11965966).

12763664 is an equidigital number, since it uses as much as digits as its factorization.

12763664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797737 (or 797731 counting only the distinct ones).

The product of its digits is 36288, while the sum is 35.

The square root of 12763664 is about 3572.6270446270. The cubic root of 12763664 is about 233.6998611326.

The spelling of 12763664 in words is "twelve million, seven hundred sixty-three thousand, six hundred sixty-four".