75604813 has 2 divisors, whose sum is σ = 75604814. Its totient is φ = 75604812.

The previous prime is 75604787. The next prime is 75604829. The reversal of 75604813 is 31840657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73051209 + 2553604 = 8547^2 + 1598^2 .

It is an emirp because it is prime and its reverse (31840657) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 75604813 - 2²⁵ = 42050381 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75604843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37802406 + 37802407.

It is an arithmetic number, because the mean of its divisors is an integer number (37802407).

Almost surely, 2^75604813 is an apocalyptic number.

It is an amenable number.

75604813 is a deficient number, since it is larger than the sum of its proper divisors (1).

75604813 is an equidigital number, since it uses as much as digits as its factorization.

75604813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 75604813 is about 8695.1028171034. The cubic root of 75604813 is about 422.8468969210.

The spelling of 75604813 in words is "seventy-five million, six hundred four thousand, eight hundred thirteen".