68781199 has 2 divisors, whose sum is σ = 68781200. Its totient is φ = 68781198.

The previous prime is 68781173. The next prime is 68781211. The reversal of 68781199 is 99118786.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68781199 - 2⁹ = 68780687 is a prime.

It is a super-3 number, since 3×68781199³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (68781499) 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, 34390599 + 34390600.

It is an arithmetic number, because the mean of its divisors is an integer number (34390600).

Almost surely, 2^68781199 is an apocalyptic number.

68781199 is a deficient number, since it is larger than the sum of its proper divisors (1).

68781199 is an equidigital number, since it uses as much as digits as its factorization.

68781199 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 217728, while the sum is 49.

The square root of 68781199 is about 8293.4431329816. The cubic root of 68781199 is about 409.7225944242.

The spelling of 68781199 in words is "sixty-eight million, seven hundred eighty-one thousand, one hundred ninety-nine".