671071147 has 4 divisors (see below), whose sum is σ = 671544160. Its totient is φ = 670598136.

The previous prime is 671071103. The next prime is 671071153. The reversal of 671071147 is 741170176.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671071147 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671071847) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 234372 + ... + 237217.

It is an arithmetic number, because the mean of its divisors is an integer number (167886040).

Almost surely, 2^671071147 is an apocalyptic number.

671071147 is a deficient number, since it is larger than the sum of its proper divisors (473013).

671071147 is a wasteful number, since it uses less digits than its factorization.

671071147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473012.

The product of its (nonzero) digits is 8232, while the sum is 34.

The square root of 671071147 is about 25905.0409573118. The cubic root of 671071147 is about 875.5000774625.

The spelling of 671071147 in words is "six hundred seventy-one million, seventy-one thousand, one hundred forty-seven".