671440841 has 8 divisors (see below), whose sum is σ = 675829440. Its totient is φ = 667066672.

The previous prime is 671440807. The next prime is 671440871. The reversal of 671440841 is 148044176.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 671440841 - 2¹⁰ = 671439817 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671440871) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99026 + ... + 105588.

It is an arithmetic number, because the mean of its divisors is an integer number (84478680).

Almost surely, 2^671440841 is an apocalyptic number.

It is an amenable number.

671440841 is a deficient number, since it is larger than the sum of its proper divisors (4388599).

671440841 is a wasteful number, since it uses less digits than its factorization.

671440841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7215.

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 671440841 is about 25912.1755358364. The cubic root of 671440841 is about 875.6608193396.

The spelling of 671440841 in words is "six hundred seventy-one million, four hundred forty thousand, eight hundred forty-one".