74683680 has 144 divisors (see below), whose sum is σ = 248863104. Its totient is φ = 18823680.

The previous prime is 74683663. The next prime is 74683709. The reversal of 74683680 is 8638647.

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 in 23 ways as a sum of consecutive naturals, for example, 173065 + ... + 173495.

It is an arithmetic number, because the mean of its divisors is an integer number (1728216).

Almost surely, 2^74683680 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 74683680, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (124431552).

74683680 is an abundant number, since it is smaller than the sum of its proper divisors (174179424).

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

74683680 is a wasteful number, since it uses less digits than its factorization.

74683680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 487 (or 460 counting only the distinct ones).

The product of its (nonzero) digits is 193536, while the sum is 42.

The square root of 74683680 is about 8641.9719971775. The cubic root of 74683680 is about 421.1226202516.

The spelling of 74683680 in words is "seventy-four million, six hundred eighty-three thousand, six hundred eighty".