671610013 has 2 divisors, whose sum is σ = 671610014. Its totient is φ = 671610012.

The previous prime is 671609989. The next prime is 671610029. The reversal of 671610013 is 310016176.

It is a happy number.

671610013 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 586269369 + 85340644 = 24213^2 + 9238^2 .

It is a cyclic number.

It is not a de Polignac number, because 671610013 - 2⁹ = 671609501 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 671610013.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (671610083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335805006 + 335805007.

It is an arithmetic number, because the mean of its divisors is an integer number (335805007).

Almost surely, 2^671610013 is an apocalyptic number.

It is an amenable number.

671610013 is a deficient number, since it is larger than the sum of its proper divisors (1).

671610013 is an equidigital number, since it uses as much as digits as its factorization.

671610013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 671610013 is about 25915.4396644163. The cubic root of 671610013 is about 875.7343551567.

Adding to 671610013 its reverse (310016176), we get a palindrome (981626189).

The spelling of 671610013 in words is "six hundred seventy-one million, six hundred ten thousand, thirteen".