671351141 has 4 divisors (see below), whose sum is σ = 677998284. Its totient is φ = 664704000.

The previous prime is 671351129. The next prime is 671351183. The reversal of 671351141 is 141153176.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 608608900 + 62742241 = 24670^2 + 7921^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-671351141 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 (671351041) 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, 3323420 + ... + 3323621.

It is an arithmetic number, because the mean of its divisors is an integer number (169499571).

Almost surely, 2^671351141 is an apocalyptic number.

It is an amenable number.

671351141 is a deficient number, since it is larger than the sum of its proper divisors (6647143).

671351141 is a wasteful number, since it uses less digits than its factorization.

671351141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6647142.

The product of its digits is 2520, while the sum is 29.

The square root of 671351141 is about 25910.4446314609. Note that the first 3 decimals coincide. The cubic root of 671351141 is about 875.6218234625.

The spelling of 671351141 in words is "six hundred seventy-one million, three hundred fifty-one thousand, one hundred forty-one".