671371047 has 12 divisors (see below), whose sum is σ = 979756960. Its totient is φ = 442965888.

The previous prime is 671371039. The next prime is 671371069. The reversal of 671371047 is 740173176.

It is not a de Polignac number, because 671371047 - 2³ = 671371039 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671371027) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 383647 + ... + 385392.

Almost surely, 2^671371047 is an apocalyptic number.

671371047 is a deficient number, since it is larger than the sum of its proper divisors (308385913).

671371047 is a wasteful number, since it uses less digits than its factorization.

671371047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 769142 (or 769139 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 671371047 is about 25910.8287594203. The cubic root of 671371047 is about 875.6304776301.

The spelling of 671371047 in words is "six hundred seventy-one million, three hundred seventy-one thousand, forty-seven".