4638666 has 32 divisors (see below), whose sum is σ = 9797760. Its totient is φ = 1461824.

The previous prime is 4638659. The next prime is 4638677. The reversal of 4638666 is 6668364.

4638666 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8971 + ... + 9473.

It is an arithmetic number, because the mean of its divisors is an integer number (306180).

Almost surely, 2^4638666 is an apocalyptic number.

4638666 is an abundant number, since it is smaller than the sum of its proper divisors (5159094).

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

4638666 is a wasteful number, since it uses less digits than its factorization.

4638666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 590.

The product of its digits is 124416, while the sum is 39.

The square root of 4638666 is about 2153.7562536183. The cubic root of 4638666 is about 166.7750326367.

The spelling of 4638666 in words is "four million, six hundred thirty-eight thousand, six hundred sixty-six".