671115516 has 24 divisors (see below), whose sum is σ = 1568268240. Its totient is φ = 223372032.

The previous prime is 671115503. The next prime is 671115527. The reversal of 671115516 is 615511176.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33181 + ... + 49428.

It is an arithmetic number, because the mean of its divisors is an integer number (65344510).

Almost surely, 2^671115516 is an apocalyptic number.

It is an amenable number.

671115516 is an abundant number, since it is smaller than the sum of its proper divisors (897152724).

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

671115516 is a wasteful number, since it uses less digits than its factorization.

671115516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83293 (or 83291 counting only the distinct ones).

The product of its digits is 6300, while the sum is 33.

The square root of 671115516 is about 25905.8973208804. The cubic root of 671115516 is about 875.5193720917.

It can be divided in two parts, 67111 and 5516, that added together give a palindrome (72627).

The spelling of 671115516 in words is "six hundred seventy-one million, one hundred fifteen thousand, five hundred sixteen".