67059989 has 2 divisors, whose sum is σ = 67059990. Its totient is φ = 67059988.

The previous prime is 67059959. The next prime is 67059991. The reversal of 67059989 is 98995076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 38651089 + 28408900 = 6217^2 + 5330^2 .

It is a cyclic number.

It is not a de Polignac number, because 67059989 - 2¹⁶ = 66994453 is a prime.

Together with 67059991, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 67059989.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67059959) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33529994 + 33529995.

It is an arithmetic number, because the mean of its divisors is an integer number (33529995).

Almost surely, 2^67059989 is an apocalyptic number.

It is an amenable number.

67059989 is a deficient number, since it is larger than the sum of its proper divisors (1).

67059989 is an equidigital number, since it uses as much as digits as its factorization.

67059989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1224720, while the sum is 53.

The square root of 67059989 is about 8189.0163633980. The cubic root of 67059989 is about 406.2759918991.

The spelling of 67059989 in words is "sixty-seven million, fifty-nine thousand, nine hundred eighty-nine".