728644711 has 2 divisors, whose sum is σ = 728644712. Its totient is φ = 728644710.

The previous prime is 728644703. The next prime is 728644723. The reversal of 728644711 is 117446827.

It is a happy number.

It is a weak prime.

It is an emirp because it is prime and its reverse (117446827) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 728644711 - 2³ = 728644703 is a prime.

It is a super-3 number, since 3×728644711³ (a number of 28 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728644781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364322355 + 364322356.

It is an arithmetic number, because the mean of its divisors is an integer number (364322356).

Almost surely, 2^728644711 is an apocalyptic number.

728644711 is a deficient number, since it is larger than the sum of its proper divisors (1).

728644711 is an equidigital number, since it uses as much as digits as its factorization.

728644711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 75264, while the sum is 40.

The square root of 728644711 is about 26993.4197722334. The cubic root of 728644711 is about 899.8537667761.

The spelling of 728644711 in words is "seven hundred twenty-eight million, six hundred forty-four thousand, seven hundred eleven".