74716289 has 2 divisors, whose sum is σ = 74716290. Its totient is φ = 74716288.

The previous prime is 74716247. The next prime is 74716319. The reversal of 74716289 is 98261747.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 54538225 + 20178064 = 7385^2 + 4492^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-74716289 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74716219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37358144 + 37358145.

It is an arithmetic number, because the mean of its divisors is an integer number (37358145).

Almost surely, 2^74716289 is an apocalyptic number.

It is an amenable number.

74716289 is a deficient number, since it is larger than the sum of its proper divisors (1).

74716289 is an equidigital number, since it uses as much as digits as its factorization.

74716289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 169344, while the sum is 44.

The square root of 74716289 is about 8643.8584555741. The cubic root of 74716289 is about 421.1839026690.

The spelling of 74716289 in words is "seventy-four million, seven hundred sixteen thousand, two hundred eighty-nine".