6721693 has 8 divisors (see below), whose sum is σ = 7457760. Its totient is φ = 6006480.

The previous prime is 6721691. The next prime is 6721711. The reversal of 6721693 is 3961276.

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 6721693 - 2¹ = 6721691 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6721691) 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 7 ways as a sum of consecutive naturals, for example, 4530 + ... + 5827.

It is an arithmetic number, because the mean of its divisors is an integer number (932220).

Almost surely, 2^6721693 is an apocalyptic number.

It is an amenable number.

6721693 is a deficient number, since it is larger than the sum of its proper divisors (736067).

6721693 is a wasteful number, since it uses less digits than its factorization.

6721693 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10427.

The product of its digits is 13608, while the sum is 34.

The square root of 6721693 is about 2592.6228032631. The cubic root of 6721693 is about 188.7236052152.

The spelling of 6721693 in words is "six million, seven hundred twenty-one thousand, six hundred ninety-three".