723066665 has 8 divisors (see below), whose sum is σ = 867855168. Its totient is φ = 578336560.

The previous prime is 723066649. The next prime is 723066667. The reversal of 723066665 is 566660327.

723066665 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 723066665 - 2⁴ = 723066649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723066667) 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, 20180 + ... + 43050.

It is an arithmetic number, because the mean of its divisors is an integer number (108481896).

Almost surely, 2^723066665 is an apocalyptic number.

It is an amenable number.

723066665 is a deficient number, since it is larger than the sum of its proper divisors (144788503).

723066665 is a wasteful number, since it uses less digits than its factorization.

723066665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29199.

The product of its (nonzero) digits is 272160, while the sum is 41.

The square root of 723066665 is about 26889.8989399365. The cubic root of 723066665 is about 897.5516438963.

The spelling of 723066665 in words is "seven hundred twenty-three million, sixty-six thousand, six hundred sixty-five".