3963664 has 10 divisors (see below), whose sum is σ = 7679630. Its totient is φ = 1981824.

The previous prime is 3963649. The next prime is 3963683. The reversal of 3963664 is 4663693.

3963664 is digitally balanced in base 2 and base 5, because in such bases it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 3920400 + 43264 = 1980^2 + 208^2 .

It is a nialpdrome in base 9.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123849 + ... + 123880.

It is an arithmetic number, because the mean of its divisors is an integer number (767963).

Almost surely, 2^3963664 is an apocalyptic number.

It is an amenable number.

3963664 is a deficient number, since it is larger than the sum of its proper divisors (3715966).

3963664 is a wasteful number, since it uses less digits than its factorization.

3963664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 247737 (or 247731 counting only the distinct ones).

The product of its digits is 69984, while the sum is 37.

The square root of 3963664 is about 1990.8952760002. The cubic root of 3963664 is about 158.2579773146.

The spelling of 3963664 in words is "three million, nine hundred sixty-three thousand, six hundred sixty-four".