723816089 has 8 divisors (see below), whose sum is σ = 787107528. Its totient is φ = 662826240.

The previous prime is 723816043. The next prime is 723816127. The reversal of 723816089 is 980618327.

It can be written as a sum of positive squares in 4 ways, for example, as 245956489 + 477859600 = 15683^2 + 21860^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 723816089 - 2²⁸ = 455380633 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (723816889) 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, 574742 + ... + 575999.

It is an arithmetic number, because the mean of its divisors is an integer number (98388441).

Almost surely, 2^723816089 is an apocalyptic number.

It is an amenable number.

723816089 is a deficient number, since it is larger than the sum of its proper divisors (63291439).

723816089 is a wasteful number, since it uses less digits than its factorization.

723816089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1150795.

The product of its (nonzero) digits is 145152, while the sum is 44.

The square root of 723816089 is about 26903.8303778477. The cubic root of 723816089 is about 897.8616266041.

The spelling of 723816089 in words is "seven hundred twenty-three million, eight hundred sixteen thousand, eighty-nine".