74643964 has 12 divisors (see below), whose sum is σ = 131383224. Its totient is φ = 37105904.

The previous prime is 74643953. The next prime is 74643967. The reversal of 74643964 is 46934647.

74643964 is digitally balanced in base 9, because in such base it contains all the possibile digits an equal number of times.

74643964 is strictly pandigital in base 9.

It is a self number, because there is not a number n which added to its sum of digits gives 74643964.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74643967) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53242 + ... + 54625.

It is an arithmetic number, because the mean of its divisors is an integer number (10948602).

Almost surely, 2^74643964 is an apocalyptic number.

It is an amenable number.

74643964 is a deficient number, since it is larger than the sum of its proper divisors (56739260).

74643964 is a wasteful number, since it uses less digits than its factorization.

74643964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108044 (or 108042 counting only the distinct ones).

The product of its digits is 435456, while the sum is 43.

The square root of 74643964 is about 8639.6738364362. The cubic root of 74643964 is about 421.0479574799.

The spelling of 74643964 in words is "seventy-four million, six hundred forty-three thousand, nine hundred sixty-four".