68719017 has 4 divisors (see below), whose sum is σ = 91625360. Its totient is φ = 45812676.

The previous prime is 68718977. The next prime is 68719037. The reversal of 68719017 is 71091786.

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 not a de Polignac number, because 68719017 - 2⁷ = 68718889 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68719037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11453167 + ... + 11453172.

It is an arithmetic number, because the mean of its divisors is an integer number (22906340).

Almost surely, 2^68719017 is an apocalyptic number.

It is an amenable number.

68719017 is a deficient number, since it is larger than the sum of its proper divisors (22906343).

68719017 is a wasteful number, since it uses less digits than its factorization.

68719017 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22906342.

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 68719017 is about 8289.6934201453. The cubic root of 68719017 is about 409.5990865846.

The spelling of 68719017 in words is "sixty-eight million, seven hundred nineteen thousand, seventeen".