671007671 has 4 divisors (see below), whose sum is σ = 671426832. Its totient is φ = 670588512.

The previous prime is 671007583. The next prime is 671007677. The reversal of 671007671 is 176700176.

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-671007671 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 (671007677) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 207170 + ... + 210383.

It is an arithmetic number, because the mean of its divisors is an integer number (167856708).

Almost surely, 2^671007671 is an apocalyptic number.

671007671 is a deficient number, since it is larger than the sum of its proper divisors (419161).

671007671 is a wasteful number, since it uses less digits than its factorization.

671007671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 419160.

The product of its (nonzero) digits is 12348, while the sum is 35.

The square root of 671007671 is about 25903.8157613893. The cubic root of 671007671 is about 875.4724723442.

The spelling of 671007671 in words is "six hundred seventy-one million, seven thousand, six hundred seventy-one".