68700019 has 2 divisors, whose sum is σ = 68700020. Its totient is φ = 68700018.

The previous prime is 68700001. The next prime is 68700089. The reversal of 68700019 is 91000786.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68700019 - 2⁵ = 68699987 is a prime.

It is a super-2 number, since 2×68700019² = 9439385221200722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68700089) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34350009 + 34350010.

It is an arithmetic number, because the mean of its divisors is an integer number (34350010).

Almost surely, 2^68700019 is an apocalyptic number.

68700019 is a deficient number, since it is larger than the sum of its proper divisors (1).

68700019 is an equidigital number, since it uses as much as digits as its factorization.

68700019 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 68700019 is about 8288.5474602007. The cubic root of 68700019 is about 409.5613373026.

The spelling of 68700019 in words is "sixty-eight million, seven hundred thousand, nineteen".