74385688 has 48 divisors (see below), whose sum is σ = 155213280. Its totient is φ = 33381504.

The previous prime is 74385683. The next prime is 74385713. The reversal of 74385688 is 88658347.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74385683) 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 11 ways as a sum of consecutive naturals, for example, 49281 + ... + 50767.

It is an arithmetic number, because the mean of its divisors is an integer number (3233610).

Almost surely, 2^74385688 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 74385688, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (77606640).

74385688 is an abundant number, since it is smaller than the sum of its proper divisors (80827592).

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

74385688 is a wasteful number, since it uses less digits than its factorization.

74385688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1556 (or 1539 counting only the distinct ones).

The product of its digits is 1290240, while the sum is 49.

The square root of 74385688 is about 8624.7137923528. The cubic root of 74385688 is about 420.5617728287.

The spelling of 74385688 in words is "seventy-four million, three hundred eighty-five thousand, six hundred eighty-eight".