74438566 has 4 divisors (see below), whose sum is σ = 111657852. Its totient is φ = 37219282.

The previous prime is 74438549. The next prime is 74438569. The reversal of 74438566 is 66583447.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×74438566² = 11082200216272712, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74438569) 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 as a sum of consecutive naturals, namely, 18609640 + ... + 18609643.

It is an arithmetic number, because the mean of its divisors is an integer number (27914463).

Almost surely, 2^74438566 is an apocalyptic number.

74438566 is a deficient number, since it is larger than the sum of its proper divisors (37219286).

74438566 is a wasteful number, since it uses less digits than its factorization.

74438566 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37219285.

The product of its digits is 483840, while the sum is 43.

The square root of 74438566 is about 8627.7787407884. The cubic root of 74438566 is about 420.6614030963.

The spelling of 74438566 in words is "seventy-four million, four hundred thirty-eight thousand, five hundred sixty-six".