6659630 has 32 divisors (see below), whose sum is σ = 12640320. Its totient is φ = 2522880.

The previous prime is 6659623. The next prime is 6659663. The reversal of 6659630 is 369566.

It is a Curzon number.

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 in 15 ways as a sum of consecutive naturals, for example, 14951 + ... + 15389.

It is an arithmetic number, because the mean of its divisors is an integer number (395010).

Almost surely, 2^6659630 is an apocalyptic number.

6659630 is a deficient number, since it is larger than the sum of its proper divisors (5980690).

6659630 is a wasteful number, since it uses less digits than its factorization.

6659630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 524.

The product of its (nonzero) digits is 29160, while the sum is 35.

The square root of 6659630 is about 2580.6258930732. The cubic root of 6659630 is about 188.1409648964.

Subtracting from 6659630 its reverse (369566), we obtain a square (6290064 = 2508²).

The spelling of 6659630 in words is "six million, six hundred fifty-nine thousand, six hundred thirty".