6491723 has 8 divisors (see below), whose sum is σ = 7438848. Its totient is φ = 5549544.

The previous prime is 6491707. The next prime is 6491729. The reversal of 6491723 is 3271946.

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

It is not a de Polignac number, because 6491723 - 2⁴ = 6491707 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6491723.

It is not an unprimeable number, because it can be changed into a prime (6491729) 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, 2240 + ... + 4242.

It is an arithmetic number, because the mean of its divisors is an integer number (929856).

Almost surely, 2^6491723 is an apocalyptic number.

6491723 is a deficient number, since it is larger than the sum of its proper divisors (947125).

6491723 is a wasteful number, since it uses less digits than its factorization.

6491723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473.

The product of its digits is 9072, while the sum is 32.

The square root of 6491723 is about 2547.8859864601. The cubic root of 6491723 is about 186.5463088218.

The spelling of 6491723 in words is "six million, four hundred ninety-one thousand, seven hundred twenty-three".