817668152 has 32 divisors (see below), whose sum is σ = 1808670720. Its totient is φ = 339124320.

The previous prime is 817668151. The next prime is 817668157. The reversal of 817668152 is 251866718.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (817668151) 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, 233768 + ... + 237239.

It is an arithmetic number, because the mean of its divisors is an integer number (56520960).

Almost surely, 2^817668152 is an apocalyptic number.

It is an amenable number.

817668152 is an abundant number, since it is smaller than the sum of its proper divisors (991002568).

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

817668152 is a wasteful number, since it uses less digits than its factorization.

817668152 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 471051 (or 471047 counting only the distinct ones).

The product of its digits is 161280, while the sum is 44.

The square root of 817668152 is about 28594.8973070371. The cubic root of 817668152 is about 935.1020895705.

The spelling of 817668152 in words is "eight hundred seventeen million, six hundred sixty-eight thousand, one hundred fifty-two".