75664866 has 8 divisors (see below), whose sum is σ = 151329744. Its totient is φ = 25221620.

The previous prime is 75664847. The next prime is 75664873. The reversal of 75664866 is 66846657.

It is a sphenic number, since it is the product of 3 distinct primes.

75664866 is an admirable number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 6305400 + ... + 6305411.

It is an arithmetic number, because the mean of its divisors is an integer number (18916218).

Almost surely, 2^75664866 is an apocalyptic number.

75664866 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

75664866 is a wasteful number, since it uses less digits than its factorization.

75664866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12610816.

The product of its digits is 1451520, while the sum is 48.

The square root of 75664866 is about 8698.5553973059. Note that the first 3 decimals coincide. The cubic root of 75664866 is about 422.9588232361.

The spelling of 75664866 in words is "seventy-five million, six hundred sixty-four thousand, eight hundred sixty-six".