671199064 has 32 divisors (see below), whose sum is σ = 1323601920. Its totient is φ = 318469536.

The previous prime is 671199059. The next prime is 671199071. The reversal of 671199064 is 460991176.

It is a happy number.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 671199064.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9007 + ... + 37729.

It is an arithmetic number, because the mean of its divisors is an integer number (41362560).

Almost surely, 2^671199064 is an apocalyptic number.

It is an amenable number.

671199064 is a deficient number, since it is larger than the sum of its proper divisors (652402856).

671199064 is a wasteful number, since it uses less digits than its factorization.

671199064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28879 (or 28875 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 671199064 is about 25907.5097992841. The cubic root of 671199064 is about 875.5557020803. Note that the first 3 decimals are identical.

The spelling of 671199064 in words is "six hundred seventy-one million, one hundred ninety-nine thousand, sixty-four".