845680671 has 24 divisors (see below), whose sum is σ = 1402727040. Its totient is φ = 485557200.

The previous prime is 845680607. The next prime is 845680679. The reversal of 845680671 is 176086548.

It is a happy number.

845680671 is a `hidden beast` number, since 84 + 568 + 0 + 6 + 7 + 1 = 666.

It is not a de Polignac number, because 845680671 - 2⁶ = 845680607 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (845680679) 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, 222915 + ... + 226676.

It is an arithmetic number, because the mean of its divisors is an integer number (58446960).

Almost surely, 2^845680671 is an apocalyptic number.

845680671 is a deficient number, since it is larger than the sum of its proper divisors (557046369).

845680671 is a wasteful number, since it uses less digits than its factorization.

845680671 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449627 (or 449624 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 845680671 is about 29080.5892478127. The cubic root of 845680671 is about 945.6609770634.

The spelling of 845680671 in words is "eight hundred forty-five million, six hundred eighty thousand, six hundred seventy-one".