74065668 has 24 divisors (see below), whose sum is σ = 182986272. Its totient is φ = 23236224.

The previous prime is 74065661. The next prime is 74065679. The reversal of 74065668 is 86656047.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (74065661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 181330 + ... + 181737.

It is an arithmetic number, because the mean of its divisors is an integer number (7624428).

Almost surely, 2^74065668 is an apocalyptic number.

It is an amenable number.

74065668 is an abundant number, since it is smaller than the sum of its proper divisors (108920604).

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

74065668 is a wasteful number, since it uses less digits than its factorization.

74065668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 363091 (or 363089 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 42.

The square root of 74065668 is about 8606.1412956098. The cubic root of 74065668 is about 419.9577962128.

The spelling of 74065668 in words is "seventy-four million, sixty-five thousand, six hundred sixty-eight".