4663206640 has 20 divisors (see below), whose sum is σ = 10841955624. Its totient is φ = 1865282624.

The previous prime is 4663206629. The next prime is 4663206649. The reversal of 4663206640 is 466023664.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 4663206640.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4663206649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29144962 + ... + 29145121.

Almost surely, 2^4663206640 is an apocalyptic number.

4663206640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4663206640 is an abundant number, since it is smaller than the sum of its proper divisors (6178748984).

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

4663206640 is a wasteful number, since it uses less digits than its factorization.

4663206640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58290096 (or 58290090 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 37.

The square root of 4663206640 is about 68287.6756084141. The cubic root of 4663206640 is about 1670.6862060997.

The spelling of 4663206640 in words is "four billion, six hundred sixty-three million, two hundred six thousand, six hundred forty".