68945508 has 18 divisors (see below), whose sum is σ = 174279014. Its totient is φ = 22981824.

The previous prime is 68945501. The next prime is 68945531. The reversal of 68945508 is 80554986.

68945508 is a `hidden beast` number, since 6 + 8 + 94 + 550 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 37675044 + 31270464 = 6138^2 + 5592^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is not an unprimeable number, because it can be changed into a prime (68945501) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 957541 + ... + 957612.

Almost surely, 2^68945508 is an apocalyptic number.

It is an amenable number.

68945508 is an abundant number, since it is smaller than the sum of its proper divisors (105333506).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68945508 is a wasteful number, since it uses less digits than its factorization.

68945508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1915163 (or 1915158 counting only the distinct ones).

The product of its (nonzero) digits is 345600, while the sum is 45.

The square root of 68945508 is about 8303.3431821165. The cubic root of 68945508 is about 410.0485922974.

The spelling of 68945508 in words is "sixty-eight million, nine hundred forty-five thousand, five hundred eight".