728644703 has 2 divisors, whose sum is σ = 728644704. Its totient is φ = 728644702.

The previous prime is 728644649. The next prime is 728644711. The reversal of 728644703 is 307446827.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 728644703 - 2¹⁴ = 728628319 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728644723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364322351 + 364322352.

It is an arithmetic number, because the mean of its divisors is an integer number (364322352).

Almost surely, 2^728644703 is an apocalyptic number.

728644703 is a deficient number, since it is larger than the sum of its proper divisors (1).

728644703 is an equidigital number, since it uses as much as digits as its factorization.

728644703 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 225792, while the sum is 41.

The square root of 728644703 is about 26993.4196240491. The cubic root of 728644703 is about 899.8537634828.

The spelling of 728644703 in words is "seven hundred twenty-eight million, six hundred forty-four thousand, seven hundred three".