68612317 has 4 divisors (see below), whose sum is σ = 69278560. Its totient is φ = 67946076.

The previous prime is 68612309. The next prime is 68612321. The reversal of 68612317 is 71321686.

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 68612317 - 2³ = 68612309 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 (68612377) 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, 332967 + ... + 333172.

It is an arithmetic number, because the mean of its divisors is an integer number (17319640).

Almost surely, 2^68612317 is an apocalyptic number.

It is an amenable number.

68612317 is a deficient number, since it is larger than the sum of its proper divisors (666243).

68612317 is a wasteful number, since it uses less digits than its factorization.

68612317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 666242.

The product of its digits is 12096, while the sum is 34.

The square root of 68612317 is about 8283.2552176062. The cubic root of 68612317 is about 409.3869819697.

The spelling of 68612317 in words is "sixty-eight million, six hundred twelve thousand, three hundred seventeen".