68695019 has 2 divisors, whose sum is σ = 68695020. Its totient is φ = 68695018.

The previous prime is 68695007. The next prime is 68695021. The reversal of 68695019 is 91059686.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 68695019 - 2²⁰ = 67646443 is a prime.

It is a super-2 number, since 2×68695019² = 9438011270820722, which contains 22 as substring.

Together with 68695021, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (68695219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34347509 + 34347510.

It is an arithmetic number, because the mean of its divisors is an integer number (34347510).

Almost surely, 2^68695019 is an apocalyptic number.

68695019 is a deficient number, since it is larger than the sum of its proper divisors (1).

68695019 is an equidigital number, since it uses as much as digits as its factorization.

68695019 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 68695019 is about 8288.2458337093. The cubic root of 68695019 is about 409.5514010784.

The spelling of 68695019 in words is "sixty-eight million, six hundred ninety-five thousand, nineteen".