671830641 has 24 divisors (see below), whose sum is σ = 987816960. Its totient is φ = 439898976.

The previous prime is 671830631. The next prime is 671830657. The reversal of 671830641 is 146038176.

671830641 is a `hidden beast` number, since 6 + 7 + 1 + 8 + 3 + 0 + 641 = 666.

It is not a de Polignac number, because 671830641 - 2⁵ = 671830609 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 671830596 and 671830605.

It is not an unprimeable number, because it can be changed into a prime (671830631) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 229495 + ... + 232403.

It is an arithmetic number, because the mean of its divisors is an integer number (41159040).

Almost surely, 2^671830641 is an apocalyptic number.

It is an amenable number.

671830641 is a deficient number, since it is larger than the sum of its proper divisors (315986319).

671830641 is a wasteful number, since it uses less digits than its factorization.

671830641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3365 (or 3362 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 36.

The square root of 671830641 is about 25919.6960051618. The cubic root of 671830641 is about 875.8302393565.

The spelling of 671830641 in words is "six hundred seventy-one million, eight hundred thirty thousand, six hundred forty-one".