74594640 has 160 divisors (see below), whose sum is σ = 250698240. Its totient is φ = 18276352.

The previous prime is 74594629. The next prime is 74594669. The reversal of 74594640 is 4649547.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 191566 + ... + 191954.

It is an arithmetic number, because the mean of its divisors is an integer number (1566864).

Almost surely, 2^74594640 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 74594640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125349120).

74594640 is an abundant number, since it is smaller than the sum of its proper divisors (176103600).

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

74594640 is a wasteful number, since it uses less digits than its factorization.

74594640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 469 (or 463 counting only the distinct ones).

The product of its (nonzero) digits is 120960, while the sum is 39.

The square root of 74594640 is about 8636.8188588160. The cubic root of 74594640 is about 420.9551955900.

The spelling of 74594640 in words is "seventy-four million, five hundred ninety-four thousand, six hundred forty".