74427473 has 2 divisors, whose sum is σ = 74427474. Its totient is φ = 74427472.

The previous prime is 74427433. The next prime is 74427481. The reversal of 74427473 is 37472447.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60715264 + 13712209 = 7792^2 + 3703^2 .

It is an emirp because it is prime and its reverse (37472447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74427473 - 2⁸ = 74427217 is a prime.

It is not a weakly prime, because it can be changed into another prime (74427403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37213736 + 37213737.

It is an arithmetic number, because the mean of its divisors is an integer number (37213737).

Almost surely, 2^74427473 is an apocalyptic number.

It is an amenable number.

74427473 is a deficient number, since it is larger than the sum of its proper divisors (1).

74427473 is an equidigital number, since it uses as much as digits as its factorization.

74427473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 131712, while the sum is 38.

The square root of 74427473 is about 8627.1358514863. The cubic root of 74427473 is about 420.6405060935.

The spelling of 74427473 in words is "seventy-four million, four hundred twenty-seven thousand, four hundred seventy-three".