67002989 has 2 divisors, whose sum is σ = 67002990. Its totient is φ = 67002988.

The previous prime is 67002959. The next prime is 67003007. The reversal of 67002989 is 98920076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 51337225 + 15665764 = 7165^2 + 3958^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-67002989 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67002919) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33501494 + 33501495.

It is an arithmetic number, because the mean of its divisors is an integer number (33501495).

Almost surely, 2^67002989 is an apocalyptic number.

It is an amenable number.

67002989 is a deficient number, since it is larger than the sum of its proper divisors (1).

67002989 is an equidigital number, since it uses as much as digits as its factorization.

67002989 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 67002989 is about 8185.5353520707. The cubic root of 67002989 is about 406.1608497395.

The spelling of 67002989 in words is "sixty-seven million, two thousand, nine hundred eighty-nine".