75663568 has 10 divisors (see below), whose sum is σ = 146598194. Its totient is φ = 37831776.

The previous prime is 75663521. The next prime is 75663571. The reversal of 75663568 is 86536657.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 71774784 + 3888784 = 8472^2 + 1972^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2364471 + ... + 2364502.

Almost surely, 2^75663568 is an apocalyptic number.

It is an amenable number.

75663568 is a deficient number, since it is larger than the sum of its proper divisors (70934626).

75663568 is a wasteful number, since it uses less digits than its factorization.

75663568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4728981 (or 4728975 counting only the distinct ones).

The product of its digits is 907200, while the sum is 46.

The square root of 75663568 is about 8698.4807868961. The cubic root of 75663568 is about 422.9564046601.

The spelling of 75663568 in words is "seventy-five million, six hundred sixty-three thousand, five hundred sixty-eight".