68992017 has 4 divisors (see below), whose sum is σ = 91989360. Its totient is φ = 45994676.

The previous prime is 68992009. The next prime is 68992039. The reversal of 68992017 is 71029986.

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 68992017 - 2³ = 68992009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 68992017.

It is not an unprimeable number, because it can be changed into a prime (68991017) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11498667 + ... + 11498672.

It is an arithmetic number, because the mean of its divisors is an integer number (22997340).

Almost surely, 2^68992017 is an apocalyptic number.

It is an amenable number.

68992017 is a deficient number, since it is larger than the sum of its proper divisors (22997343).

68992017 is a wasteful number, since it uses less digits than its factorization.

68992017 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22997342.

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 68992017 is about 8306.1433288862. The cubic root of 68992017 is about 410.1407745820.

The spelling of 68992017 in words is "sixty-eight million, nine hundred ninety-two thousand, seventeen".