74161605 has 16 divisors (see below), whose sum is σ = 135609984. Its totient is φ = 33902400.

The previous prime is 74161603. The next prime is 74161609. The reversal of 74161605 is 50616147.

It is not a de Polignac number, because 74161605 - 2¹ = 74161603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74161603) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 353046 + ... + 353255.

It is an arithmetic number, because the mean of its divisors is an integer number (8475624).

Almost surely, 2^74161605 is an apocalyptic number.

It is an amenable number.

74161605 is a deficient number, since it is larger than the sum of its proper divisors (61448379).

74161605 is a wasteful number, since it uses less digits than its factorization.

74161605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 706316.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 74161605 is about 8611.7132441809. The cubic root of 74161605 is about 420.1390412668.

The spelling of 74161605 in words is "seventy-four million, one hundred sixty-one thousand, six hundred five".