6723323540 has 24 divisors (see below), whose sum is σ = 14949508392. Its totient is φ = 2531133440.

The previous prime is 6723323521. The next prime is 6723323543. The reversal of 6723323540 is 453233276.

It can be written as a sum of positive squares in 4 ways, for example, as 2749534096 + 3973789444 = 52436^2 + 63038^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 6723323540.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6723323543) 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, 9886901 + ... + 9887580.

It is an arithmetic number, because the mean of its divisors is an integer number (622896183).

Almost surely, 2^6723323540 is an apocalyptic number.

It is an amenable number.

6723323540 is an abundant number, since it is smaller than the sum of its proper divisors (8226184852).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6723323540 is a wasteful number, since it uses less digits than its factorization.

6723323540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19774507 (or 19774505 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 35.

The square root of 6723323540 is about 81995.8751401557. The cubic root of 6723323540 is about 1887.3886409456.

The spelling of 6723323540 in words is "six billion, seven hundred twenty-three million, three hundred twenty-three thousand, five hundred forty".