6691730 has 8 divisors (see below), whose sum is σ = 12045132. Its totient is φ = 2676688.

The previous prime is 6691723. The next prime is 6691771. The reversal of 6691730 is 371966.

It can be written as a sum of positive squares in 2 ways, for example, as 6056521 + 635209 = 2461^2 + 797^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 334577 + ... + 334596.

Almost surely, 2^6691730 is an apocalyptic number.

6691730 is a deficient number, since it is larger than the sum of its proper divisors (5353402).

6691730 is a wasteful number, since it uses less digits than its factorization.

6691730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 669180.

The product of its (nonzero) digits is 6804, while the sum is 32.

The square root of 6691730 is about 2586.8378379790. The cubic root of 6691730 is about 188.4427658231.

The spelling of 6691730 in words is "six million, six hundred ninety-one thousand, seven hundred thirty".