723332645 has 32 divisors (see below), whose sum is σ = 1029784320. Its totient is φ = 477227520.

The previous prime is 723332639. The next prime is 723332657. The reversal of 723332645 is 546233327.

723332645 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 723332645 - 2⁴ = 723332629 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 334889 + ... + 337041.

It is an arithmetic number, because the mean of its divisors is an integer number (32180760).

Almost surely, 2^723332645 is an apocalyptic number.

It is an amenable number.

723332645 is a deficient number, since it is larger than the sum of its proper divisors (306451675).

723332645 is a wasteful number, since it uses less digits than its factorization.

723332645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2525.

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

The square root of 723332645 is about 26894.8442085096. The cubic root of 723332645 is about 897.6616851652.

The spelling of 723332645 in words is "seven hundred twenty-three million, three hundred thirty-two thousand, six hundred forty-five".