3663934640 has 40 divisors (see below), whose sum is σ = 8793449088. Its totient is φ = 1418296320.

The previous prime is 3663934627. The next prime is 3663934663. The reversal of 3663934640 is 464393663.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 3663934591 and 3663934600.

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, 736217 + ... + 741176.

Almost surely, 2^3663934640 is an apocalyptic number.

It is an amenable number.

3663934640 is an abundant number, since it is smaller than the sum of its proper divisors (5129514448).

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

3663934640 is a wasteful number, since it uses less digits than its factorization.

3663934640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1477437 (or 1477431 counting only the distinct ones).

The product of its (nonzero) digits is 839808, while the sum is 44.

The square root of 3663934640 is about 60530.4439104819. The cubic root of 3663934640 is about 1541.6385887200.

The spelling of 3663934640 in words is "three billion, six hundred sixty-three million, nine hundred thirty-four thousand, six hundred forty".