728064943 has 2 divisors, whose sum is σ = 728064944. Its totient is φ = 728064942.

The previous prime is 728064919. The next prime is 728064959. The reversal of 728064943 is 349460827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 728064943 - 2⁹ = 728064431 is a prime.

It is a super-2 number, since 2×728064943² = 1060157122451186498, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 728064943.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728064913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364032471 + 364032472.

It is an arithmetic number, because the mean of its divisors is an integer number (364032472).

Almost surely, 2^728064943 is an apocalyptic number.

728064943 is a deficient number, since it is larger than the sum of its proper divisors (1).

728064943 is an equidigital number, since it uses as much as digits as its factorization.

728064943 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 290304, while the sum is 43.

The square root of 728064943 is about 26982.6785734849. The cubic root of 728064943 is about 899.6150382424.

The spelling of 728064943 in words is "seven hundred twenty-eight million, sixty-four thousand, nine hundred forty-three".