721080599 has 4 divisors (see below), whose sum is σ = 731843064. Its totient is φ = 710318136.

The previous prime is 721080589. The next prime is 721080601. The reversal of 721080599 is 995080127.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 995080127 = 41 ⋅24270247.

It is a cyclic number.

It is not a de Polignac number, because 721080599 - 2²⁸ = 452645143 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (721080509) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5381132 + ... + 5381265.

It is an arithmetic number, because the mean of its divisors is an integer number (182960766).

Almost surely, 2^721080599 is an apocalyptic number.

721080599 is a deficient number, since it is larger than the sum of its proper divisors (10762465).

721080599 is a wasteful number, since it uses less digits than its factorization.

721080599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10762464.

The product of its (nonzero) digits is 45360, while the sum is 41.

The square root of 721080599 is about 26852.9439540621. The cubic root of 721080599 is about 896.7291142061.

The spelling of 721080599 in words is "seven hundred twenty-one million, eighty thousand, five hundred ninety-nine".