74446661 has 2 divisors, whose sum is σ = 74446662. Its totient is φ = 74446660.

The previous prime is 74446651. The next prime is 74446679. The reversal of 74446661 is 16664447.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 59197636 + 15249025 = 7694^2 + 3905^2 .

It is an emirp because it is prime and its reverse (16664447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74446661 - 2⁶ = 74446597 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74446651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37223330 + 37223331.

It is an arithmetic number, because the mean of its divisors is an integer number (37223331).

Almost surely, 2^74446661 is an apocalyptic number.

It is an amenable number.

74446661 is a deficient number, since it is larger than the sum of its proper divisors (1).

74446661 is an equidigital number, since it uses as much as digits as its factorization.

74446661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 96768, while the sum is 38.

The square root of 74446661 is about 8628.2478522583. The cubic root of 74446661 is about 420.6766511539.

The spelling of 74446661 in words is "seventy-four million, four hundred forty-six thousand, six hundred sixty-one".