68217617 has 16 divisors (see below), whose sum is σ = 78744960. Its totient is φ = 58536192.

The previous prime is 68217613. The next prime is 68217641. The reversal of 68217617 is 71671286.

It is not a de Polignac number, because 68217617 - 2² = 68217613 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (68217613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16484 + ... + 20202.

It is an arithmetic number, because the mean of its divisors is an integer number (4921560).

Almost surely, 2^68217617 is an apocalyptic number.

It is an amenable number.

68217617 is a deficient number, since it is larger than the sum of its proper divisors (10527343).

68217617 is a wasteful number, since it uses less digits than its factorization.

68217617 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3832.

The product of its digits is 28224, while the sum is 38.

The square root of 68217617 is about 8259.3956800725. The cubic root of 68217617 is about 408.6004570996.

The spelling of 68217617 in words is "sixty-eight million, two hundred seventeen thousand, six hundred seventeen".