68017885 has 16 divisors (see below), whose sum is σ = 88071984. Its totient is φ = 50130432.

The previous prime is 68017879. The next prime is 68017907. The reversal of 68017885 is 58871086.

It can be written as a sum of positive squares in 8 ways, for example, as 7458361 + 60559524 = 2731^2 + 7782^2 .

It is a cyclic number.

It is not a de Polignac number, because 68017885 - 2⁷ = 68017757 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 65329 + ... + 66361.

It is an arithmetic number, because the mean of its divisors is an integer number (5504499).

Almost surely, 2^68017885 is an apocalyptic number.

68017885 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

68017885 is a deficient number, since it is larger than the sum of its proper divisors (20054099).

68017885 is a wasteful number, since it uses less digits than its factorization.

68017885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064.

The product of its (nonzero) digits is 107520, while the sum is 43.

The square root of 68017885 is about 8247.2956173524. The cubic root of 68017885 is about 408.2012915654.

The spelling of 68017885 in words is "sixty-eight million, seventeen thousand, eight hundred eighty-five".