4666640 has 40 divisors (see below), whose sum is σ = 11838528. Its totient is φ = 1696640.

The previous prime is 4666639. The next prime is 4666643. The reversal of 4666640 is 466664.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (40).

It is a junction number, because it is equal to n+sod(n) for n = 4666597 and 4666606.

It is not an unprimeable number, because it can be changed into a prime (4666643) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1772 + ... + 3531.

Almost surely, 2^4666640 is an apocalyptic number.

4666640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4666640 is an abundant number, since it is smaller than the sum of its proper divisors (7171888).

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

4666640 is a wasteful number, since it uses less digits than its factorization.

4666640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5327 (or 5321 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 4666640 is about 2160.2407273265. The cubic root of 4666640 is about 167.1096128602.

The spelling of 4666640 in words is "four million, six hundred sixty-six thousand, six hundred forty".