671071149 has 40 divisors (see below), whose sum is σ = 1173657408. Its totient is φ = 374103360.

The previous prime is 671071103. The next prime is 671071153. The reversal of 671071149 is 941170176.

It is not a de Polignac number, because 671071149 - 2⁸ = 671070893 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671071949) 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 39 ways as a sum of consecutive naturals, for example, 8814 + ... + 37680.

Almost surely, 2^671071149 is an apocalyptic number.

It is an amenable number.

671071149 is a deficient number, since it is larger than the sum of its proper divisors (502586259).

671071149 is a wasteful number, since it uses less digits than its factorization.

671071149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28927 (or 28918 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 36.

The square root of 671071149 is about 25905.0409959143. The cubic root of 671071149 is about 875.5000783322.

The spelling of 671071149 in words is "six hundred seventy-one million, seventy-one thousand, one hundred forty-nine".