723728577 has 32 divisors (see below), whose sum is σ = 1139677056. Its totient is φ = 402739200.

The previous prime is 723728561. The next prime is 723728581. The reversal of 723728577 is 775827327.

It is a happy number.

It is not a de Polignac number, because 723728577 - 2⁴ = 723728561 is a prime.

It is not an unprimeable number, because it can be changed into a prime (723728527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 78427 + ... + 87167.

It is an arithmetic number, because the mean of its divisors is an integer number (35614908).

Almost surely, 2^723728577 is an apocalyptic number.

It is an amenable number.

723728577 is a deficient number, since it is larger than the sum of its proper divisors (415948479).

723728577 is a wasteful number, since it uses less digits than its factorization.

723728577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8961.

The product of its digits is 1152480, while the sum is 48.

The square root of 723728577 is about 26902.2039431716. The cubic root of 723728577 is about 897.8254402327.

The spelling of 723728577 in words is "seven hundred twenty-three million, seven hundred twenty-eight thousand, five hundred seventy-seven".