68622018 has 16 divisors (see below), whose sum is σ = 143211456. Its totient is φ = 21879440.

The previous prime is 68621963. The next prime is 68622049. The reversal of 68622018 is 81022686.

It is a self number, because there is not a number n which added to its sum of digits gives 68622018.

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 in 7 ways as a sum of consecutive naturals, for example, 248493 + ... + 248768.

It is an arithmetic number, because the mean of its divisors is an integer number (8950716).

Almost surely, 2^68622018 is an apocalyptic number.

68622018 is an abundant number, since it is smaller than the sum of its proper divisors (74589438).

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

68622018 is a wasteful number, since it uses less digits than its factorization.

68622018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 497289.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 68622018 is about 8283.8407758720. The cubic root of 68622018 is about 409.4062752789.

The spelling of 68622018 in words is "sixty-eight million, six hundred twenty-two thousand, eighteen".