806728599 has 16 divisors (see below), whose sum is σ = 1214748640. Its totient is φ = 529001280.

The previous prime is 806728577. The next prime is 806728661. The reversal of 806728599 is 995827608.

It is a happy number.

806728599 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 806728599 - 2⁸ = 806728343 is a prime.

It is a super-2 number, since 2×806728599² = 1301622064889005602, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (806728399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 243262 + ... + 246555.

It is an arithmetic number, because the mean of its divisors is an integer number (75921790).

Almost surely, 2^806728599 is an apocalyptic number.

806728599 is a deficient number, since it is larger than the sum of its proper divisors (408020041).

806728599 is a wasteful number, since it uses less digits than its factorization.

806728599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 489887 (or 489881 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The square root of 806728599 is about 28402.9681371507. The cubic root of 806728599 is about 930.9131198099.

The spelling of 806728599 in words is "eight hundred six million, seven hundred twenty-eight thousand, five hundred ninety-nine".