671428213 has 16 divisors (see below), whose sum is σ = 762940800. Its totient is φ = 587442240.

The previous prime is 671428211. The next prime is 671428237. The reversal of 671428213 is 312824176.

It is a cyclic number.

It is not a de Polignac number, because 671428213 - 2¹ = 671428211 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (671428211) 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, 13818 + ... + 39163.

It is an arithmetic number, because the mean of its divisors is an integer number (47683800).

Almost surely, 2^671428213 is an apocalyptic number.

It is an amenable number.

671428213 is a deficient number, since it is larger than the sum of its proper divisors (91512587).

671428213 is a wasteful number, since it uses less digits than its factorization.

671428213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53052.

The product of its digits is 16128, while the sum is 34.

The square root of 671428213 is about 25911.9318654553. The cubic root of 671428213 is about 875.6553296953.

The spelling of 671428213 in words is "six hundred seventy-one million, four hundred twenty-eight thousand, two hundred thirteen".