612065989 has 2 divisors, whose sum is σ = 612065990. Its totient is φ = 612065988.

The previous prime is 612065963. The next prime is 612066029. The reversal of 612065989 is 989560216.

612065989 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 592192225 + 19873764 = 24335^2 + 4458^2 .

It is a cyclic number.

It is not a de Polignac number, because 612065989 - 2⁵ = 612065957 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (612065089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 306032994 + 306032995.

It is an arithmetic number, because the mean of its divisors is an integer number (306032995).

Almost surely, 2^612065989 is an apocalyptic number.

It is an amenable number.

612065989 is a deficient number, since it is larger than the sum of its proper divisors (1).

612065989 is an equidigital number, since it uses as much as digits as its factorization.

612065989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 612065989 is about 24739.9674413690. The cubic root of 612065989 is about 849.0489889661.

The spelling of 612065989 in words is "six hundred twelve million, sixty-five thousand, nine hundred eighty-nine".