6660723 has 8 divisors (see below), whose sum is σ = 9006336. Its totient is φ = 4377800.

The previous prime is 6660721. The next prime is 6660733. The reversal of 6660723 is 3270666.

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

It is a cyclic number.

It is not a de Polignac number, because 6660723 - 2¹ = 6660721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6660721) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15423 + ... + 15848.

It is an arithmetic number, because the mean of its divisors is an integer number (1125792).

Almost surely, 2^6660723 is an apocalyptic number.

6660723 is a deficient number, since it is larger than the sum of its proper divisors (2345613).

6660723 is a wasteful number, since it uses less digits than its factorization.

6660723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31345.

The product of its (nonzero) digits is 9072, while the sum is 30.

The square root of 6660723 is about 2580.8376547160. The cubic root of 6660723 is about 188.1512571011.

The spelling of 6660723 in words is "six million, six hundred sixty thousand, seven hundred twenty-three".