728179633 has 2 divisors, whose sum is σ = 728179634. Its totient is φ = 728179632.

The previous prime is 728179607. The next prime is 728179637. The reversal of 728179633 is 336971827.

It is a happy number.

It is the 11017-th star number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 728082289 + 97344 = 26983^2 + 312^2 .

It is a cyclic number.

It is not a de Polignac number, because 728179633 - 2¹³ = 728171441 is a prime.

It is not a weakly prime, because it can be changed into another prime (728179637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364089816 + 364089817.

It is an arithmetic number, because the mean of its divisors is an integer number (364089817).

Almost surely, 2^728179633 is an apocalyptic number.

It is an amenable number.

728179633 is a deficient number, since it is larger than the sum of its proper divisors (1).

728179633 is an equidigital number, since it uses as much as digits as its factorization.

728179633 is an evil number, because the sum of its binary digits is even.

The product of its digits is 381024, while the sum is 46.

The square root of 728179633 is about 26984.8037421064. The cubic root of 728179633 is about 899.6622736951.

The spelling of 728179633 in words is "seven hundred twenty-eight million, one hundred seventy-nine thousand, six hundred thirty-three".