728406061 has 2 divisors, whose sum is σ = 728406062. Its totient is φ = 728406060.

The previous prime is 728406043. The next prime is 728406127. The reversal of 728406061 is 160604827.

728406061 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 723932836 + 4473225 = 26906^2 + 2115^2 .

It is a cyclic number.

It is not a de Polignac number, because 728406061 - 2²³ = 720017453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (728406661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364203030 + 364203031.

It is an arithmetic number, because the mean of its divisors is an integer number (364203031).

Almost surely, 2^728406061 is an apocalyptic number.

It is an amenable number.

728406061 is a deficient number, since it is larger than the sum of its proper divisors (1).

728406061 is an equidigital number, since it uses as much as digits as its factorization.

728406061 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 728406061 is about 26988.9988884360. The cubic root of 728406061 is about 899.7555142497.

The spelling of 728406061 in words is "seven hundred twenty-eight million, four hundred six thousand, sixty-one".