663964036 has 24 divisors (see below), whose sum is σ = 1233580320. Its totient is φ = 311617152.

The previous prime is 663964031. The next prime is 663964043. The reversal of 663964036 is 630469366.

It is a super-2 number, since 2×663964036² = 881696482202818592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 663963983 and 663964001.

It is not an unprimeable number, because it can be changed into a prime (663964031) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12891 + ... + 38653.

It is an arithmetic number, because the mean of its divisors is an integer number (51399180).

Almost surely, 2^663964036 is an apocalyptic number.

It is an amenable number.

663964036 is a deficient number, since it is larger than the sum of its proper divisors (569616284).

663964036 is a wasteful number, since it uses less digits than its factorization.

663964036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26163 (or 26161 counting only the distinct ones).

The product of its (nonzero) digits is 419904, while the sum is 43.

The square root of 663964036 is about 25767.4996070632. The cubic root of 663964036 is about 872.3983832526.

The spelling of 663964036 in words is "six hundred sixty-three million, nine hundred sixty-four thousand, thirty-six".