74944981 has 2 divisors, whose sum is σ = 74944982. Its totient is φ = 74944980.

The previous prime is 74944967. The next prime is 74944997. The reversal of 74944981 is 18944947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63856081 + 11088900 = 7991^2 + 3330^2 .

It is a cyclic number.

It is not a de Polignac number, because 74944981 - 2²¹ = 72847829 is a prime.

It is a super-2 number, since 2×74944981² = 11233500354180722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74944901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37472490 + 37472491.

It is an arithmetic number, because the mean of its divisors is an integer number (37472491).

Almost surely, 2^74944981 is an apocalyptic number.

It is an amenable number.

74944981 is a deficient number, since it is larger than the sum of its proper divisors (1).

74944981 is an equidigital number, since it uses as much as digits as its factorization.

74944981 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 46.

The square root of 74944981 is about 8657.0769316207. The cubic root of 74944981 is about 421.6131855981.

The spelling of 74944981 in words is "seventy-four million, nine hundred forty-four thousand, nine hundred eighty-one".