75664349 has 2 divisors, whose sum is σ = 75664350. Its totient is φ = 75664348.

The previous prime is 75664279. The next prime is 75664357. The reversal of 75664349 is 94346657.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75568249 + 96100 = 8693^2 + 310^2 .

It is a cyclic number.

It is not a de Polignac number, because 75664349 - 2¹² = 75660253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (75664249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37832174 + 37832175.

It is an arithmetic number, because the mean of its divisors is an integer number (37832175).

Almost surely, 2^75664349 is an apocalyptic number.

It is an amenable number.

75664349 is a deficient number, since it is larger than the sum of its proper divisors (1).

75664349 is an equidigital number, since it uses as much as digits as its factorization.

75664349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 544320, while the sum is 44.

The square root of 75664349 is about 8698.5256796770. The cubic root of 75664349 is about 422.9578599083.

The spelling of 75664349 in words is "seventy-five million, six hundred sixty-four thousand, three hundred forty-nine".