68985205 has 16 divisors (see below), whose sum is σ = 86427504. Its totient is φ = 52807680.

The previous prime is 68985197. The next prime is 68985221. The reversal of 68985205 is 50258986.

It can be written as a sum of positive squares in 8 ways, for example, as 972196 + 68013009 = 986^2 + 8247^2 .

It is not a de Polignac number, because 68985205 - 2³ = 68985197 is a prime.

It is a Duffinian number.

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, 8229 + ... + 14341.

It is an arithmetic number, because the mean of its divisors is an integer number (5401719).

Almost surely, 2^68985205 is an apocalyptic number.

It is an amenable number.

68985205 is a deficient number, since it is larger than the sum of its proper divisors (17442299).

68985205 is a wasteful number, since it uses less digits than its factorization.

68985205 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6216.

The product of its (nonzero) digits is 172800, while the sum is 43.

The square root of 68985205 is about 8305.7332608265. The cubic root of 68985205 is about 410.1272755762.

The spelling of 68985205 in words is "sixty-eight million, nine hundred eighty-five thousand, two hundred five".