68889384 has 48 divisors (see below), whose sum is σ = 193014900. Its totient is φ = 22170624.

The previous prime is 68889377. The next prime is 68889391. The reversal of 68889384 is 48398886.

It is an interprime number because it is at equal distance from previous prime (68889377) and next prime (68889391).

It can be written as a sum of positive squares in 2 ways, for example, as 64352484 + 4536900 = 8022^2 + 2130^2 .

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 68889384.

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 11 ways as a sum of consecutive naturals, for example, 14409 + ... + 18584.

Almost surely, 2^68889384 is an apocalyptic number.

It is an amenable number.

68889384 is an abundant number, since it is smaller than the sum of its proper divisors (124125516).

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

68889384 is a wasteful number, since it uses less digits than its factorization.

68889384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33034 (or 33027 counting only the distinct ones).

The product of its digits is 2654208, while the sum is 54.

The square root of 68889384 is about 8299.9628914833. The cubic root of 68889384 is about 409.9372975697.

The spelling of 68889384 in words is "sixty-eight million, eight hundred eighty-nine thousand, three hundred eighty-four".