74334581 has 2 divisors, whose sum is σ = 74334582. Its totient is φ = 74334580.

The previous prime is 74334577. The next prime is 74334587. The reversal of 74334581 is 18543347.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 19722481 = 7390^2 + 4441^2 .

It is a cyclic number.

It is not a de Polignac number, because 74334581 - 2² = 74334577 is a prime.

It is a super-2 number, since 2×74334581² = 11051259864891122, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74334587) 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 as a sum of consecutive naturals, namely, 37167290 + 37167291.

It is an arithmetic number, because the mean of its divisors is an integer number (37167291).

Almost surely, 2^74334581 is an apocalyptic number.

It is an amenable number.

74334581 is a deficient number, since it is larger than the sum of its proper divisors (1).

74334581 is an equidigital number, since it uses as much as digits as its factorization.

74334581 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 40320, while the sum is 35.

The square root of 74334581 is about 8621.7504603184. The cubic root of 74334581 is about 420.4654345168.

The spelling of 74334581 in words is "seventy-four million, three hundred thirty-four thousand, five hundred eighty-one".