817304594401 has 3 divisors (see below), whose sum is σ = 817305498451. Its totient is φ = 817303690352.

The previous prime is 817304594389. The next prime is 817304594419. The reversal of 817304594401 is 104495403718.

The square root of 817304594401 is 904049.

It is a perfect power (a square), and thus also a powerful number.

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 can be written as a sum of positive squares in only one way, i.e., 745029648801 + 72274945600 = 863151^2 + 268840^2 .

It is not a de Polignac number, because 817304594401 - 2¹¹ = 817304592353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (817304594461) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 452025 + ... + 1356073.

Almost surely, 2^817304594401 is an apocalyptic number.

817304594401 is the 904049-th square number.

817304594401 is the 452025-th centered octagonal number.

It is an amenable number.

817304594401 is a deficient number, since it is larger than the sum of its proper divisors (904050).

817304594401 is an frugal number, since it uses more digits than its factorization.

817304594401 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1808098 (or 904049 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 46.

The spelling of 817304594401 in words is "eight hundred seventeen billion, three hundred four million, five hundred ninety-four thousand, four hundred one".