817704852 has 12 divisors (see below), whose sum is σ = 1907978016. Its totient is φ = 272568280.

The previous prime is 817704803. The next prime is 817704857. The reversal of 817704852 is 258407718.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817704857) 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, 34071024 + ... + 34071047.

It is an arithmetic number, because the mean of its divisors is an integer number (158998168).

Almost surely, 2^817704852 is an apocalyptic number.

It is an amenable number.

817704852 is an abundant number, since it is smaller than the sum of its proper divisors (1090273164).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

817704852 is a wasteful number, since it uses less digits than its factorization.

817704852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68142078 (or 68142076 counting only the distinct ones).

The product of its (nonzero) digits is 125440, while the sum is 42.

The square root of 817704852 is about 28595.5390227217. The cubic root of 817704852 is about 935.1160796525.

The spelling of 817704852 in words is "eight hundred seventeen million, seven hundred four thousand, eight hundred fifty-two".