68417685 has 24 divisors (see below), whose sum is σ = 135532800. Its totient is φ = 31276512.

The previous prime is 68417677. The next prime is 68417693. The reversal of 68417685 is 58671486.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (68417677) and next prime (68417693).

It is not a de Polignac number, because 68417685 - 2³ = 68417677 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 68417685.

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 108285 + ... + 108914.

It is an arithmetic number, because the mean of its divisors is an integer number (5647200).

Almost surely, 2^68417685 is an apocalyptic number.

It is an amenable number.

68417685 is a deficient number, since it is larger than the sum of its proper divisors (67115115).

68417685 is a wasteful number, since it uses less digits than its factorization.

68417685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217217 (or 217214 counting only the distinct ones).

The product of its digits is 322560, while the sum is 45.

The square root of 68417685 is about 8271.4983527774. The cubic root of 68417685 is about 408.9995137916. Note that the first 3 decimals are identical.

The spelling of 68417685 in words is "sixty-eight million, four hundred seventeen thousand, six hundred eighty-five".