6674721 has 4 divisors (see below), whose sum is σ = 8899632. Its totient is φ = 4449812.

The previous prime is 6674711. The next prime is 6674743. The reversal of 6674721 is 1274766.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 6674721 - 2¹⁵ = 6641953 is a prime.

It is a D-number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (6674711) by changing a digit.

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, 1112451 + ... + 1112456.

It is an arithmetic number, because the mean of its divisors is an integer number (2224908).

Almost surely, 2^6674721 is an apocalyptic number.

It is an amenable number.

6674721 is a deficient number, since it is larger than the sum of its proper divisors (2224911).

6674721 is a wasteful number, since it uses less digits than its factorization.

6674721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2224910.

The product of its digits is 14112, while the sum is 33.

The square root of 6674721 is about 2583.5481416068. The cubic root of 6674721 is about 188.2829694517.

The spelling of 6674721 in words is "six million, six hundred seventy-four thousand, seven hundred twenty-one".