728719223 has 2 divisors, whose sum is σ = 728719224. Its totient is φ = 728719222.

The previous prime is 728719219. The next prime is 728719231. The reversal of 728719223 is 322917827.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 728719223 - 2² = 728719219 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728719253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364359611 + 364359612.

It is an arithmetic number, because the mean of its divisors is an integer number (364359612).

Almost surely, 2^728719223 is an apocalyptic number.

728719223 is a deficient number, since it is larger than the sum of its proper divisors (1).

728719223 is an equidigital number, since it uses as much as digits as its factorization.

728719223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 84672, while the sum is 41.

The square root of 728719223 is about 26994.7999251708. The cubic root of 728719223 is about 899.8844390720.

The spelling of 728719223 in words is "seven hundred twenty-eight million, seven hundred nineteen thousand, two hundred twenty-three".