68308888 has 8 divisors (see below), whose sum is σ = 128079180. Its totient is φ = 34154440.

The previous prime is 68308861. The next prime is 68308913. The reversal of 68308888 is 88880386.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (8).

It is a super-2 number, since 2×68308888² = 9332208359593088, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4269298 + ... + 4269313.

Almost surely, 2^68308888 is an apocalyptic number.

It is an amenable number.

68308888 is a deficient number, since it is larger than the sum of its proper divisors (59770292).

68308888 is a wasteful number, since it uses less digits than its factorization.

68308888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8538617 (or 8538613 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 49.

The square root of 68308888 is about 8264.9191163616. The cubic root of 68308888 is about 408.7826033653.

It can be divided in two parts, 68308 and 888, that added together give a palindrome (69196).

The spelling of 68308888 in words is "sixty-eight million, three hundred eight thousand, eight hundred eighty-eight".