728604719 has 4 divisors (see below), whose sum is σ = 728679144. Its totient is φ = 728530296.

The previous prime is 728604713. The next prime is 728604731. The reversal of 728604719 is 917406827.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 728604719 - 2¹² = 728600623 is a prime.

It is a super-2 number, since 2×728604719² = 1061729673098137922, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 728604719.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (728604713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19817 + ... + 43010.

It is an arithmetic number, because the mean of its divisors is an integer number (182169786).

Almost surely, 2^728604719 is an apocalyptic number.

728604719 is a deficient number, since it is larger than the sum of its proper divisors (74425).

728604719 is a wasteful number, since it uses less digits than its factorization.

728604719 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74424.

The product of its (nonzero) digits is 169344, while the sum is 44.

The square root of 728604719 is about 26992.6789889407. The cubic root of 728604719 is about 899.8373035123.

The spelling of 728604719 in words is "seven hundred twenty-eight million, six hundred four thousand, seven hundred nineteen".