817000801 has 4 divisors (see below), whose sum is σ = 817251604. Its totient is φ = 816750000.

The previous prime is 817000787. The next prime is 817000819. The reversal of 817000801 is 108000718.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 249608401 + 567392400 = 15799^2 + 23820^2 .

It is a 3-Lehmer number, since φ(817000801) divides (817000801-1)³.

It is a cyclic number.

It is not a de Polignac number, because 817000801 - 2¹⁹ = 816476513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (817000831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 120450 + ... + 127051.

It is an arithmetic number, because the mean of its divisors is an integer number (204312901).

Almost surely, 2^817000801 is an apocalyptic number.

It is an amenable number.

817000801 is a deficient number, since it is larger than the sum of its proper divisors (250803).

817000801 is a wasteful number, since it uses less digits than its factorization.

817000801 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 250802.

The product of its (nonzero) digits is 448, while the sum is 25.

The square root of 817000801 is about 28583.2258676308. The cubic root of 817000801 is about 934.8476215596.

The spelling of 817000801 in words is "eight hundred seventeen million, eight hundred one", and thus it is an aban number.