68211499 has 2 divisors, whose sum is σ = 68211500. Its totient is φ = 68211498.

The previous prime is 68211443. The next prime is 68211503. The reversal of 68211499 is 99411286.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68211499 - 2²³ = 59822891 is a prime.

It is not a weakly prime, because it can be changed into another prime (68218499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34105749 + 34105750.

It is an arithmetic number, because the mean of its divisors is an integer number (34105750).

Almost surely, 2^68211499 is an apocalyptic number.

68211499 is a deficient number, since it is larger than the sum of its proper divisors (1).

68211499 is an equidigital number, since it uses as much as digits as its factorization.

68211499 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 68211499 is about 8259.0253056883. The cubic root of 68211499 is about 408.5882418173.

The spelling of 68211499 in words is "sixty-eight million, two hundred eleven thousand, four hundred ninety-nine".