671195009 has 8 divisors (see below), whose sum is σ = 676597152. Its totient is φ = 665814240.

The previous prime is 671194973. The next prime is 671195023. The reversal of 671195009 is 900591176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671195009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671195209) by changing a digit.

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, 60962 + ... + 71124.

It is an arithmetic number, because the mean of its divisors is an integer number (84574644).

Almost surely, 2^671195009 is an apocalyptic number.

It is an amenable number.

671195009 is a deficient number, since it is larger than the sum of its proper divisors (5402143).

671195009 is a wasteful number, since it uses less digits than its factorization.

671195009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10687.

The product of its (nonzero) digits is 17010, while the sum is 38.

The square root of 671195009 is about 25907.4315400041. The cubic root of 671195009 is about 875.5539388749.

The spelling of 671195009 in words is "six hundred seventy-one million, one hundred ninety-five thousand, nine".