74083644 has 72 divisors (see below), whose sum is σ = 197188992. Its totient is φ = 23406240.

The previous prime is 74083631. The next prime is 74083651. The reversal of 74083644 is 44638047.

74083644 is a `hidden beast` number, since 7 + 4 + 0 + 8 + 3 + 644 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 74083599 and 74083608.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 108127 + ... + 108809.

It is an arithmetic number, because the mean of its divisors is an integer number (2738736).

Almost surely, 2^74083644 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 74083644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98594496).

74083644 is an abundant number, since it is smaller than the sum of its proper divisors (123105348).

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

74083644 is a wasteful number, since it uses less digits than its factorization.

74083644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 847 (or 842 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 36.

The square root of 74083644 is about 8607.1856027391. The cubic root of 74083644 is about 419.9917685462.

The spelling of 74083644 in words is "seventy-four million, eighty-three thousand, six hundred forty-four".