74147273 has 2 divisors, whose sum is σ = 74147274. Its totient is φ = 74147272.

The previous prime is 74147263. The next prime is 74147321. The reversal of 74147273 is 37274147.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 67108864 + 7038409 = 8192^2 + 2653^2 .

It is an emirp because it is prime and its reverse (37274147) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74147273 - 2¹⁰ = 74146249 is a prime.

It is not a weakly prime, because it can be changed into another prime (74147263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37073636 + 37073637.

It is an arithmetic number, because the mean of its divisors is an integer number (37073637).

Almost surely, 2^74147273 is an apocalyptic number.

It is an amenable number.

74147273 is a deficient number, since it is larger than the sum of its proper divisors (1).

74147273 is an equidigital number, since it uses as much as digits as its factorization.

74147273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 32928, while the sum is 35.

The square root of 74147273 is about 8610.8810815154. The cubic root of 74147273 is about 420.1119750571. Note that the first 3 decimals are identical.

The spelling of 74147273 in words is "seventy-four million, one hundred forty-seven thousand, two hundred seventy-three".