67916489 has 2 divisors, whose sum is σ = 67916490. Its totient is φ = 67916488.

The previous prime is 67916467. The next prime is 67916501. The reversal of 67916489 is 98461976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 37002889 + 30913600 = 6083^2 + 5560^2 .

It is a cyclic number.

It is not a de Polignac number, because 67916489 - 2¹² = 67912393 is a prime.

It is a super-2 number, since 2×67916489² = 9225298956174242, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (67916419) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33958244 + 33958245.

It is an arithmetic number, because the mean of its divisors is an integer number (33958245).

Almost surely, 2^67916489 is an apocalyptic number.

It is an amenable number.

67916489 is a deficient number, since it is larger than the sum of its proper divisors (1).

67916489 is an equidigital number, since it uses as much as digits as its factorization.

67916489 is an evil number, because the sum of its binary digits is even.

The product of its digits is 653184, while the sum is 50.

The square root of 67916489 is about 8241.1460974794. The cubic root of 67916489 is about 407.9983519894.

The spelling of 67916489 in words is "sixty-seven million, nine hundred sixteen thousand, four hundred eighty-nine".