6640030 has 32 divisors (see below), whose sum is σ = 12791520. Its totient is φ = 2472960.

The previous prime is 6640027. The next prime is 6640061. The reversal of 6640030 is 300466.

It is a happy number.

It is a congruent number.

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, 23490 + ... + 23770.

It is an arithmetic number, because the mean of its divisors is an integer number (399735).

Almost surely, 2^6640030 is an apocalyptic number.

6640030 is a deficient number, since it is larger than the sum of its proper divisors (6151490).

6640030 is a wasteful number, since it uses less digits than its factorization.

6640030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 444.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 6640030 is about 2576.8255664674. The cubic root of 6640030 is about 187.9562105648.

Adding to 6640030 its reverse (300466), we get a palindrome (6940496).

It can be divided in two parts, 66400 and 30, that added together give a triangular number (66430 = T₃₆₄).

The spelling of 6640030 in words is "six million, six hundred forty thousand, thirty".