74121673 has 2 divisors, whose sum is σ = 74121674. Its totient is φ = 74121672.

The previous prime is 74121643. The next prime is 74121701. The reversal of 74121673 is 37612147.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73822464 + 299209 = 8592^2 + 547^2 .

It is a cyclic number.

It is not a de Polignac number, because 74121673 - 2¹⁷ = 73990601 is a prime.

It is not a weakly prime, because it can be changed into another prime (74121623) 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, 37060836 + 37060837.

It is an arithmetic number, because the mean of its divisors is an integer number (37060837).

Almost surely, 2^74121673 is an apocalyptic number.

It is an amenable number.

74121673 is a deficient number, since it is larger than the sum of its proper divisors (1).

74121673 is an equidigital number, since it uses as much as digits as its factorization.

74121673 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7056, while the sum is 31.

The square root of 74121673 is about 8609.3944618655. The cubic root of 74121673 is about 420.0636203700.

The spelling of 74121673 in words is "seventy-four million, one hundred twenty-one thousand, six hundred seventy-three".