74180305 has 8 divisors (see below), whose sum is σ = 89062632. Its totient is φ = 59313408.

The previous prime is 74180279. The next prime is 74180321. The reversal of 74180305 is 50308147.

It can be written as a sum of positive squares in 4 ways, for example, as 5157441 + 69022864 = 2271^2 + 8308^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74180305 - 2⁵ = 74180273 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16479 + ... + 20491.

It is an arithmetic number, because the mean of its divisors is an integer number (11132829).

Almost surely, 2^74180305 is an apocalyptic number.

It is an amenable number.

74180305 is a deficient number, since it is larger than the sum of its proper divisors (14882327).

74180305 is a wasteful number, since it uses less digits than its factorization.

74180305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7715.

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 74180305 is about 8612.7989062790. The cubic root of 74180305 is about 420.1743512713.

The spelling of 74180305 in words is "seventy-four million, one hundred eighty thousand, three hundred five".