75664208 has 20 divisors (see below), whose sum is σ = 148609908. Its totient is φ = 37313280.

The previous prime is 75664207. The next prime is 75664241. The reversal of 75664208 is 80246657.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 36626704 + 39037504 = 6052^2 + 6248^2 .

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75664207) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31223 + ... + 33558.

Almost surely, 2^75664208 is an apocalyptic number.

It is an amenable number.

75664208 is a deficient number, since it is larger than the sum of its proper divisors (72945700).

75664208 is a wasteful number, since it uses less digits than its factorization.

75664208 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64862 (or 64856 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 38.

The square root of 75664208 is about 8698.5175748515. The cubic root of 75664208 is about 422.9575971818.

The spelling of 75664208 in words is "seventy-five million, six hundred sixty-four thousand, two hundred eight".