68490419 has 2 divisors, whose sum is σ = 68490420. Its totient is φ = 68490418.

The previous prime is 68490407. The next prime is 68490437. The reversal of 68490419 is 91409486.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68490419 - 2⁴ = 68490403 is a prime.

It is a super-2 number, since 2×68490419² = 9381874989591122, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (68499419) 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, 34245209 + 34245210.

It is an arithmetic number, because the mean of its divisors is an integer number (34245210).

Almost surely, 2^68490419 is an apocalyptic number.

68490419 is a deficient number, since it is larger than the sum of its proper divisors (1).

68490419 is an equidigital number, since it uses as much as digits as its factorization.

68490419 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 68490419 is about 8275.8938490051. The cubic root of 68490419 is about 409.1443965814.

The spelling of 68490419 in words is "sixty-eight million, four hundred ninety thousand, four hundred nineteen".