6667730 has 8 divisors (see below), whose sum is σ = 12001932. Its totient is φ = 2667088.

The previous prime is 6667729. The next prime is 6667741. The reversal of 6667730 is 377666.

It can be written as a sum of positive squares in 2 ways, for example, as 6436369 + 231361 = 2537^2 + 481^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 333377 + ... + 333396.

Almost surely, 2^6667730 is an apocalyptic number.

6667730 is a deficient number, since it is larger than the sum of its proper divisors (5334202).

6667730 is a wasteful number, since it uses less digits than its factorization.

6667730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666780.

The product of its (nonzero) digits is 31752, while the sum is 35.

The square root of 6667730 is about 2582.1948028760. The cubic root of 6667730 is about 188.2172115940.

Subtracting from 6667730 its reverse (377666), we obtain a square (6290064 = 2508²).

The spelling of 6667730 in words is "six million, six hundred sixty-seven thousand, seven hundred thirty".