74870413 has 2 divisors, whose sum is σ = 74870414. Its totient is φ = 74870412.

The previous prime is 74870407. The next prime is 74870417. The reversal of 74870413 is 31407847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62773929 + 12096484 = 7923^2 + 3478^2 .

It is an emirp because it is prime and its reverse (31407847) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74870413 - 2⁵ = 74870381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74870417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37435206 + 37435207.

It is an arithmetic number, because the mean of its divisors is an integer number (37435207).

Almost surely, 2^74870413 is an apocalyptic number.

It is an amenable number.

74870413 is a deficient number, since it is larger than the sum of its proper divisors (1).

74870413 is an equidigital number, since it uses as much as digits as its factorization.

74870413 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18816, while the sum is 34.

The square root of 74870413 is about 8652.7690943420. The cubic root of 74870413 is about 421.4733083874.

The spelling of 74870413 in words is "seventy-four million, eight hundred seventy thousand, four hundred thirteen".