74718481 has 2 divisors, whose sum is σ = 74718482. Its totient is φ = 74718480.

The previous prime is 74718461. The next prime is 74718517. The reversal of 74718481 is 18481747.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74235456 + 483025 = 8616^2 + 695^2 .

It is an emirp because it is prime and its reverse (18481747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74718481 - 2⁷ = 74718353 is a prime.

It is a super-2 number, since 2×74718481² = 11165702805894722, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (74718461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37359240 + 37359241.

It is an arithmetic number, because the mean of its divisors is an integer number (37359241).

Almost surely, 2^74718481 is an apocalyptic number.

It is an amenable number.

74718481 is a deficient number, since it is larger than the sum of its proper divisors (1).

74718481 is an equidigital number, since it uses as much as digits as its factorization.

74718481 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 50176, while the sum is 40.

The square root of 74718481 is about 8643.9852498717. The cubic root of 74718481 is about 421.1880214767.

The spelling of 74718481 in words is "seventy-four million, seven hundred eighteen thousand, four hundred eighty-one".