3663663940 has 24 divisors (see below), whose sum is σ = 7705154520. Its totient is φ = 1463282688.

The previous prime is 3663663911. The next prime is 3663663973. The reversal of 3663663940 is 493663663.

3663663940 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 816587776 + 2847076164 = 28576^2 + 53358^2 .

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, 122635 + ... + 149554.

It is an arithmetic number, because the mean of its divisors is an integer number (321048105).

Almost surely, 2^3663663940 is an apocalyptic number.

It is an amenable number.

3663663940 is an abundant number, since it is smaller than the sum of its proper divisors (4041490580).

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

3663663940 is a wasteful number, since it uses less digits than its factorization.

3663663940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 272871 (or 272869 counting only the distinct ones).

The product of its (nonzero) digits is 1259712, while the sum is 46.

The square root of 3663663940 is about 60528.2078042957. The cubic root of 3663663940 is about 1541.6006211719.

It can be divided in two parts, 36636 and 63940, that added together give a triangular number (100576 = T₄₄₈).

The spelling of 3663663940 in words is "three billion, six hundred sixty-three million, six hundred sixty-three thousand, nine hundred forty".