67838899 has 2 divisors, whose sum is σ = 67838900. Its totient is φ = 67838898.

The previous prime is 67838861. The next prime is 67838923. The reversal of 67838899 is 99883876.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 67838899 - 2²¹ = 65741747 is a prime.

It is not a weakly prime, because it can be changed into another prime (67838839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33919449 + 33919450.

It is an arithmetic number, because the mean of its divisors is an integer number (33919450).

Almost surely, 2^67838899 is an apocalyptic number.

67838899 is a deficient number, since it is larger than the sum of its proper divisors (1).

67838899 is an equidigital number, since it uses as much as digits as its factorization.

67838899 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5225472, while the sum is 58.

The square root of 67838899 is about 8236.4372759100. The cubic root of 67838899 is about 407.8429226014.

The spelling of 67838899 in words is "sixty-seven million, eight hundred thirty-eight thousand, eight hundred ninety-nine".