671602217 has 16 divisors (see below), whose sum is σ = 793883328. Its totient is φ = 560105280.

The previous prime is 671602201. The next prime is 671602237. The reversal of 671602217 is 712206176.

It is a cyclic number.

It is not a de Polignac number, because 671602217 - 2⁴ = 671602201 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (671602237) 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, 8903 + ... + 37715.

It is an arithmetic number, because the mean of its divisors is an integer number (49617708).

Almost surely, 2^671602217 is an apocalyptic number.

It is an amenable number.

671602217 is a deficient number, since it is larger than the sum of its proper divisors (122281111).

671602217 is a wasteful number, since it uses less digits than its factorization.

671602217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29000.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 671602217 is about 25915.2892517139. The cubic root of 671602217 is about 875.7309666568.

The spelling of 671602217 in words is "six hundred seventy-one million, six hundred two thousand, two hundred seventeen".