68519389 has 4 divisors (see below), whose sum is σ = 68536800. Its totient is φ = 68501980.

The previous prime is 68519387. The next prime is 68519413. The reversal of 68519389 is 98391586.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 68519389 - 2¹ = 68519387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68519383) 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 in 3 ways as a sum of consecutive naturals, for example, 312 + ... + 11710.

It is an arithmetic number, because the mean of its divisors is an integer number (17134200).

Almost surely, 2^68519389 is an apocalyptic number.

It is an amenable number.

68519389 is a deficient number, since it is larger than the sum of its proper divisors (17411).

68519389 is a wasteful number, since it uses less digits than its factorization.

68519389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17410.

The product of its digits is 466560, while the sum is 49.

The square root of 68519389 is about 8277.6439280752. The cubic root of 68519389 is about 409.2020749280.

The spelling of 68519389 in words is "sixty-eight million, five hundred nineteen thousand, three hundred eighty-nine".