671704005 has 48 divisors (see below), whose sum is σ = 1256808960. Its totient is φ = 305440128.

The previous prime is 671703997. The next prime is 671704009. The reversal of 671704005 is 500407176.

It is a happy number.

It is not a de Polignac number, because 671704005 - 2³ = 671703997 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671704009) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 142476 + ... + 147114.

It is an arithmetic number, because the mean of its divisors is an integer number (26183520).

Almost surely, 2^671704005 is an apocalyptic number.

It is an amenable number.

671704005 is a deficient number, since it is larger than the sum of its proper divisors (585104955).

671704005 is a wasteful number, since it uses less digits than its factorization.

671704005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4858 (or 4851 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 671704005 is about 25917.2530373109. The cubic root of 671704005 is about 875.7752063364.

The spelling of 671704005 in words is "six hundred seventy-one million, seven hundred four thousand, five".