74173481 has 4 divisors (see below), whose sum is σ = 74212692. Its totient is φ = 74134272.

The previous prime is 74173439. The next prime is 74173501. The reversal of 74173481 is 18437147.

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

It can be written as a sum of positive squares in 2 ways, for example, as 43824400 + 30349081 = 6620^2 + 5509^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74173481 is a prime.

It is a super-2 number, since 2×74173481² = 11003410567314722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74173381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16616 + ... + 20601.

It is an arithmetic number, because the mean of its divisors is an integer number (18553173).

Almost surely, 2^74173481 is an apocalyptic number.

It is an amenable number.

74173481 is a deficient number, since it is larger than the sum of its proper divisors (39211).

74173481 is a wasteful number, since it uses less digits than its factorization.

74173481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39210.

The product of its digits is 18816, while the sum is 35.

The square root of 74173481 is about 8612.4027425568. The cubic root of 74173481 is about 420.1614666397.

The spelling of 74173481 in words is "seventy-four million, one hundred seventy-three thousand, four hundred eighty-one".