4644666 has 48 divisors (see below), whose sum is σ = 11321856. Its totient is φ = 1365408.

The previous prime is 4644631. The next prime is 4644667. The reversal of 4644666 is 6664464.

It is a happy number.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 4644666.

It is not an unprimeable number, because it can be changed into a prime (4644667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4951 + ... + 5813.

It is an arithmetic number, because the mean of its divisors is an integer number (235872).

Almost surely, 2^4644666 is an apocalyptic number.

4644666 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 4644666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5660928).

4644666 is an abundant number, since it is smaller than the sum of its proper divisors (6677190).

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

4644666 is a wasteful number, since it uses less digits than its factorization.

4644666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 907 (or 904 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 4644666 is about 2155.1487187663. The cubic root of 4644666 is about 166.8469081190.

The spelling of 4644666 in words is "four million, six hundred forty-four thousand, six hundred sixty-six".