75668864 has 16 divisors (see below), whose sum is σ = 150746820. Its totient is φ = 37834368.

The previous prime is 75668843. The next prime is 75668867. The reversal of 75668864 is 46886657.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75668867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 295454 + ... + 295709.

Almost surely, 2^75668864 is an apocalyptic number.

It is an amenable number.

75668864 is a deficient number, since it is larger than the sum of its proper divisors (75077956).

75668864 is an equidigital number, since it uses as much as digits as its factorization.

75668864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 591177 (or 591165 counting only the distinct ones).

The product of its digits is 1935360, while the sum is 50.

The square root of 75668864 is about 8698.7852025441. The cubic root of 75668864 is about 422.9662725746.

The spelling of 75668864 in words is "seventy-five million, six hundred sixty-eight thousand, eight hundred sixty-four".