671332605 has 32 divisors (see below), whose sum is σ = 1132963200. Its totient is φ = 338510592.

The previous prime is 671332603. The next prime is 671332639. The reversal of 671332605 is 506233176.

671332605 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 671332605 - 2¹ = 671332603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671332603) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 156631 + ... + 160859.

It is an arithmetic number, because the mean of its divisors is an integer number (35405100).

Almost surely, 2^671332605 is an apocalyptic number.

It is an amenable number.

671332605 is a deficient number, since it is larger than the sum of its proper divisors (461630595).

671332605 is a wasteful number, since it uses less digits than its factorization.

671332605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4813.

The product of its (nonzero) digits is 22680, while the sum is 33.

The square root of 671332605 is about 25910.0869354003. The cubic root of 671332605 is about 875.6137647510.

The spelling of 671332605 in words is "six hundred seventy-one million, three hundred thirty-two thousand, six hundred five".