74070881 has 2 divisors, whose sum is σ = 74070882. Its totient is φ = 74070880.

The previous prime is 74070877. The next prime is 74070889. The reversal of 74070881 is 18807047.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42250000 + 31820881 = 6500^2 + 5641^2 .

It is a cyclic number.

It is not a de Polignac number, because 74070881 - 2² = 74070877 is a prime.

It is a super-3 number, since 3×74070881³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74070889) 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, 37035440 + 37035441.

It is an arithmetic number, because the mean of its divisors is an integer number (37035441).

Almost surely, 2^74070881 is an apocalyptic number.

It is an amenable number.

74070881 is a deficient number, since it is larger than the sum of its proper divisors (1).

74070881 is an equidigital number, since it uses as much as digits as its factorization.

74070881 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12544, while the sum is 35.

The square root of 74070881 is about 8606.4441553989. Note that the first 3 decimals coincide. The cubic root of 74070881 is about 419.9676486797.

The spelling of 74070881 in words is "seventy-four million, seventy thousand, eight hundred eighty-one".