68078169 has 12 divisors (see below), whose sum is σ = 99044400. Its totient is φ = 45058104.

The previous prime is 68078161. The next prime is 68078191. The reversal of 68078169 is 96187086.

It is a happy number.

It is not a de Polignac number, because 68078169 - 2³ = 68078161 is a prime.

It is a super-2 number, since 2×68078169² = 9269274188785122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (68078161) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25959 + ... + 28460.

It is an arithmetic number, because the mean of its divisors is an integer number (8253700).

Almost surely, 2^68078169 is an apocalyptic number.

It is an amenable number.

68078169 is a deficient number, since it is larger than the sum of its proper divisors (30966231).

68078169 is a wasteful number, since it uses less digits than its factorization.

68078169 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54564 (or 54561 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 68078169 is about 8250.9495817148. The cubic root of 68078169 is about 408.3218517203.

The spelling of 68078169 in words is "sixty-eight million, seventy-eight thousand, one hundred sixty-nine".