671312845 has 32 divisors (see below), whose sum is σ = 1011271680. Its totient is φ = 417130560.

The previous prime is 671312827. The next prime is 671312923. The reversal of 671312845 is 548213176.

It is not a de Polignac number, because 671312845 - 2⁷ = 671312717 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6651 + ... + 37240.

It is an arithmetic number, because the mean of its divisors is an integer number (31602240).

Almost surely, 2^671312845 is an apocalyptic number.

It is an amenable number.

671312845 is a deficient number, since it is larger than the sum of its proper divisors (339958835).

671312845 is a wasteful number, since it uses less digits than its factorization.

671312845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43945.

The product of its digits is 40320, while the sum is 37.

The square root of 671312845 is about 25909.7056139200. The cubic root of 671312845 is about 875.6051737299.

The spelling of 671312845 in words is "six hundred seventy-one million, three hundred twelve thousand, eight hundred forty-five".