671845097 has 16 divisors (see below), whose sum is σ = 849429504. Its totient is φ = 516138000.

The previous prime is 671845081. The next prime is 671845103. The reversal of 671845097 is 790548176.

It is not a de Polignac number, because 671845097 - 2⁴ = 671845081 is a prime.

It is not an unprimeable number, because it can be changed into a prime (671845007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55979 + ... + 66912.

It is an arithmetic number, because the mean of its divisors is an integer number (53089344).

Almost surely, 2^671845097 is an apocalyptic number.

It is an amenable number.

671845097 is a deficient number, since it is larger than the sum of its proper divisors (177584407).

671845097 is a wasteful number, since it uses less digits than its factorization.

671845097 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122980.

The product of its (nonzero) digits is 423360, while the sum is 47.

The square root of 671845097 is about 25919.9748649569. The cubic root of 671845097 is about 875.8365211536.

It can be divided in two parts, 6718 and 45097, that added together give a palindrome (51815).

The spelling of 671845097 in words is "six hundred seventy-one million, eight hundred forty-five thousand, ninety-seven".