74686009 has 2 divisors, whose sum is σ = 74686010. Its totient is φ = 74686008.

The previous prime is 74685983. The next prime is 74686019. The reversal of 74686009 is 90068647.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65853225 + 8832784 = 8115^2 + 2972^2 .

It is an emirp because it is prime and its reverse (90068647) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74686009 - 2⁵ = 74685977 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74686019) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37343004 + 37343005.

It is an arithmetic number, because the mean of its divisors is an integer number (37343005).

Almost surely, 2^74686009 is an apocalyptic number.

It is an amenable number.

74686009 is a deficient number, since it is larger than the sum of its proper divisors (1).

74686009 is an equidigital number, since it uses as much as digits as its factorization.

74686009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 74686009 is about 8642.1067454643. The cubic root of 74686009 is about 421.1269977559.

The spelling of 74686009 in words is "seventy-four million, six hundred eighty-six thousand, nine".