74305556 has 12 divisors (see below), whose sum is σ = 140037492. Its totient is φ = 34294848.

The previous prime is 74305537. The next prime is 74305559. The reversal of 74305556 is 65550347.

It can be written as a sum of positive squares in 2 ways, for example, as 10784656 + 63520900 = 3284^2 + 7970^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74305559) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 714425 + ... + 714528.

It is an arithmetic number, because the mean of its divisors is an integer number (11669791).

Almost surely, 2^74305556 is an apocalyptic number.

It is an amenable number.

74305556 is a deficient number, since it is larger than the sum of its proper divisors (65731936).

74305556 is a wasteful number, since it uses less digits than its factorization.

74305556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1428970 (or 1428968 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 35.

The square root of 74305556 is about 8620.0670531035. The cubic root of 74305556 is about 420.4107018122.

The spelling of 74305556 in words is "seventy-four million, three hundred five thousand, five hundred fifty-six".