723072647 has 6 divisors (see below), whose sum is σ = 794782464. Its totient is φ = 657338660.

The previous prime is 723072619. The next prime is 723072659. The reversal of 723072647 is 746270327.

723072647 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 723072647 - 2⁶ = 723072583 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 723072647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (723072617) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2987783 + ... + 2988024.

It is an arithmetic number, because the mean of its divisors is an integer number (132463744).

Almost surely, 2^723072647 is an apocalyptic number.

723072647 is a deficient number, since it is larger than the sum of its proper divisors (71709817).

723072647 is a wasteful number, since it uses less digits than its factorization.

723072647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5975829 (or 5975818 counting only the distinct ones).

The product of its (nonzero) digits is 98784, while the sum is 38.

The square root of 723072647 is about 26890.0101710654. The cubic root of 723072647 is about 897.5541190665.

The spelling of 723072647 in words is "seven hundred twenty-three million, seventy-two thousand, six hundred forty-seven".