817166273 has 8 divisors (see below), whose sum is σ = 1018804800. Its totient is φ = 636752880.

The previous prime is 817166267. The next prime is 817166303. The reversal of 817166273 is 372661718.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 817166273 - 2⁴ = 817166257 is a prime.

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 817166273.

It is not an unprimeable number, because it can be changed into a prime (817166873) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5306198 + ... + 5306351.

It is an arithmetic number, because the mean of its divisors is an integer number (127350600).

Almost surely, 2^817166273 is an apocalyptic number.

It is an amenable number.

817166273 is a deficient number, since it is larger than the sum of its proper divisors (201638527).

817166273 is a wasteful number, since it uses less digits than its factorization.

817166273 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10612567.

The product of its digits is 84672, while the sum is 41.

The square root of 817166273 is about 28586.1202859010. The cubic root of 817166273 is about 934.9107307034.

The spelling of 817166273 in words is "eight hundred seventeen million, one hundred sixty-six thousand, two hundred seventy-three".