74588161 has 2 divisors, whose sum is σ = 74588162. Its totient is φ = 74588160.

The previous prime is 74588159. The next prime is 74588179. The reversal of 74588161 is 16188547.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 69205761 + 5382400 = 8319^2 + 2320^2 .

It is a cyclic number.

It is not a de Polignac number, because 74588161 - 2¹ = 74588159 is a prime.

It is a super-2 number, since 2×74588161² = 11126787522723842, which contains 22 as substring.

Together with 74588159, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (74588191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37294080 + 37294081.

It is an arithmetic number, because the mean of its divisors is an integer number (37294081).

Almost surely, 2^74588161 is an apocalyptic number.

It is an amenable number.

74588161 is a deficient number, since it is larger than the sum of its proper divisors (1).

74588161 is an equidigital number, since it uses as much as digits as its factorization.

74588161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 53760, while the sum is 40.

The square root of 74588161 is about 8636.4437704416. The cubic root of 74588161 is about 420.9430077274.

The spelling of 74588161 in words is "seventy-four million, five hundred eighty-eight thousand, one hundred sixty-one".