6409723 has 4 divisors (see below), whose sum is σ = 6443128. Its totient is φ = 6376320.

The previous prime is 6409721. The next prime is 6409747. The reversal of 6409723 is 3279046.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6409723 - 2¹ = 6409721 is a prime.

It is a d-powerful number, because it can be written as 6⁶ + 4¹⁰ + 0 + 9⁶ + 7² + 2⁵ + 3¹⁴ .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6409721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16413 + ... + 16798.

It is an arithmetic number, because the mean of its divisors is an integer number (1610782).

Almost surely, 2^6409723 is an apocalyptic number.

6409723 is a deficient number, since it is larger than the sum of its proper divisors (33405).

6409723 is a wasteful number, since it uses less digits than its factorization.

6409723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33404.

The product of its (nonzero) digits is 9072, while the sum is 31.

The square root of 6409723 is about 2531.7430754324. The cubic root of 6409723 is about 185.7575269556.

The spelling of 6409723 in words is "six million, four hundred nine thousand, seven hundred twenty-three".