68866408 has 16 divisors (see below), whose sum is σ = 139057380. Its totient is φ = 31784448.

The previous prime is 68866403. The next prime is 68866423. The reversal of 68866408 is 80466886.

It can be written as a sum of positive squares in 2 ways, for example, as 68856804 + 9604 = 8298^2 + 98^2 .

It is not an unprimeable number, because it can be changed into a prime (68866403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 330985 + ... + 331192.

Almost surely, 2^68866408 is an apocalyptic number.

It is an amenable number.

68866408 is an abundant number, since it is smaller than the sum of its proper divisors (70190972).

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

68866408 is a wasteful number, since it uses less digits than its factorization.

68866408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 662196 (or 662192 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The square root of 68866408 is about 8298.5786734838. The cubic root of 68866408 is about 409.8917183812.

The spelling of 68866408 in words is "sixty-eight million, eight hundred sixty-six thousand, four hundred eight".