671168648 has 16 divisors (see below), whose sum is σ = 1285217280. Its totient is φ = 328444048.

The previous prime is 671168629. The next prime is 671168651. The reversal of 671168648 is 846861176.

It is a super-3 number, since 3×671168648³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 892136 + ... + 892887.

It is an arithmetic number, because the mean of its divisors is an integer number (80326080).

Almost surely, 2^671168648 is an apocalyptic number.

It is an amenable number.

671168648 is a deficient number, since it is larger than the sum of its proper divisors (614048632).

671168648 is a wasteful number, since it uses less digits than its factorization.

671168648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1785076 (or 1785072 counting only the distinct ones).

The product of its digits is 387072, while the sum is 47.

The square root of 671168648 is about 25906.9227813725. The cubic root of 671168648 is about 875.5424763445.

The spelling of 671168648 in words is "six hundred seventy-one million, one hundred sixty-eight thousand, six hundred forty-eight".