4660666646 has 4 divisors (see below), whose sum is σ = 6990999972. Its totient is φ = 2330333322.

The previous prime is 4660666639. The next prime is 4660666669. The reversal of 4660666646 is 6466660664.

It is a semiprime because it is the product of two primes.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 4660666594 and 4660666603.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1165166660 + ... + 1165166663.

It is an arithmetic number, because the mean of its divisors is an integer number (1747749993).

Almost surely, 2^4660666646 is an apocalyptic number.

4660666646 is a deficient number, since it is larger than the sum of its proper divisors (2330333326).

4660666646 is a wasteful number, since it uses less digits than its factorization.

4660666646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330333325.

The product of its (nonzero) digits is 4478976, while the sum is 50.

The square root of 4660666646 is about 68269.0753269736. The cubic root of 4660666646 is about 1670.3828166106.

The spelling of 4660666646 in words is "four billion, six hundred sixty million, six hundred sixty-six thousand, six hundred forty-six".