67399 has 2 divisors, whose sum is σ = 67400. Its totient is φ = 67398.

The previous prime is 67391. The next prime is 67409. The reversal of 67399 is 99376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 67399 - 2³ = 67391 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33699 + 33700.

It is an arithmetic number, because the mean of its divisors is an integer number (33700).

2⁶⁷³⁹⁹ is an apocalyptic number.

67399 is a deficient number, since it is larger than the sum of its proper divisors (1).

67399 is an equidigital number, since it uses as much as digits as its factorization.

67399 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10206, while the sum is 34.

The square root of 67399 is about 259.6131737798. The cubic root of 67399 is about 40.6959462465.

The spelling of 67399 in words is "sixty-seven thousand, three hundred ninety-nine".