6666730 has 16 divisors (see below), whose sum is σ = 13714560. Its totient is φ = 2285712.

The previous prime is 6666719. The next prime is 6666749. The reversal of 6666730 is 376666.

It is an Ulam number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47550 + ... + 47689.

It is an arithmetic number, because the mean of its divisors is an integer number (857160).

Almost surely, 2^6666730 is an apocalyptic number.

6666730 is an abundant number, since it is smaller than the sum of its proper divisors (7047830).

6666730 is a wasteful number, since it uses less digits than its factorization.

6666730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95253.

The product of its (nonzero) digits is 27216, while the sum is 34.

The square root of 6666730 is about 2582.0011618897. The cubic root of 6666730 is about 188.2078017638.

Subtracting from 6666730 its reverse (376666), we obtain a square (6290064 = 2508²).

It can be divided in two parts, 6666 and 730, that added together give a square (7396 = 86²).

The spelling of 6666730 in words is "six million, six hundred sixty-six thousand, seven hundred thirty".