728718101 has 2 divisors, whose sum is σ = 728718102. Its totient is φ = 728718100.

The previous prime is 728718097. The next prime is 728718113. The reversal of 728718101 is 101817827.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 598780900 + 129937201 = 24470^2 + 11399^2 .

It is a cyclic number.

It is not a de Polignac number, because 728718101 - 2² = 728718097 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728718401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364359050 + 364359051.

It is an arithmetic number, because the mean of its divisors is an integer number (364359051).

Almost surely, 2^728718101 is an apocalyptic number.

It is an amenable number.

728718101 is a deficient number, since it is larger than the sum of its proper divisors (1).

728718101 is an equidigital number, since it uses as much as digits as its factorization.

728718101 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6272, while the sum is 35.

The square root of 728718101 is about 26994.7791433825. The cubic root of 728718101 is about 899.8839772247.

The spelling of 728718101 in words is "seven hundred twenty-eight million, seven hundred eighteen thousand, one hundred one".