671273406 has 32 divisors (see below), whose sum is σ = 1510144800. Its totient is φ = 223756344.

The previous prime is 671273329. The next prime is 671273417. The reversal of 671273406 is 604372176.

It is a congruent number.

It is an unprimeable number.

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, 72361 + ... + 81108.

It is an arithmetic number, because the mean of its divisors is an integer number (47192025).

Almost surely, 2^671273406 is an apocalyptic number.

671273406 is an abundant number, since it is smaller than the sum of its proper divisors (838871394).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

671273406 is an equidigital number, since it uses as much as digits as its factorization.

671273406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153492 (or 153474 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 36.

The square root of 671273406 is about 25908.9445172898. The cubic root of 671273406 is about 875.5880263999.

The spelling of 671273406 in words is "six hundred seventy-one million, two hundred seventy-three thousand, four hundred six".