68887619 has 2 divisors, whose sum is σ = 68887620. Its totient is φ = 68887618.

The previous prime is 68887601. The next prime is 68887649. The reversal of 68887619 is 91678886.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 68887619 - 2¹² = 68883523 is a prime.

It is a super-2 number, since 2×68887619² = 9491008102978322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (68887649) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34443809 + 34443810.

It is an arithmetic number, because the mean of its divisors is an integer number (34443810).

Almost surely, 2^68887619 is an apocalyptic number.

68887619 is a deficient number, since it is larger than the sum of its proper divisors (1).

68887619 is an equidigital number, since it uses as much as digits as its factorization.

68887619 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1161216, while the sum is 53.

The square root of 68887619 is about 8299.8565650257. The cubic root of 68887619 is about 409.9337965682.

The spelling of 68887619 in words is "sixty-eight million, eight hundred eighty-seven thousand, six hundred nineteen".