3646481663 has 16 divisors (see below), whose sum is σ = 4294080000. Its totient is φ = 3061507680.

The previous prime is 3646481651. The next prime is 3646481711. The reversal of 3646481663 is 3661846463.

It is not a de Polignac number, because 3646481663 - 2⁸ = 3646481407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3646481603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241163 + ... + 255836.

It is an arithmetic number, because the mean of its divisors is an integer number (268380000).

Almost surely, 2^3646481663 is an apocalyptic number.

3646481663 is a deficient number, since it is larger than the sum of its proper divisors (647598337).

3646481663 is a wasteful number, since it uses less digits than its factorization.

3646481663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497062.

The product of its digits is 1492992, while the sum is 47.

The square root of 3646481663 is about 60386.1048834912. The cubic root of 3646481663 is about 1539.1868511754.

The spelling of 3646481663 in words is "three billion, six hundred forty-six million, four hundred eighty-one thousand, six hundred sixty-three".