75868866 has 16 divisors (see below), whose sum is σ = 168597600. Its totient is φ = 25289604.

The previous prime is 75868847. The next prime is 75868883. The reversal of 75868866 is 66886857.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 1404979 = 75868866 / (7 + 5 + 8 + 6 + 8 + 8 + 6 + 6).

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 7 ways as a sum of consecutive naturals, for example, 702436 + ... + 702543.

It is an arithmetic number, because the mean of its divisors is an integer number (10537350).

Almost surely, 2^75868866 is an apocalyptic number.

75868866 is an abundant number, since it is smaller than the sum of its proper divisors (92728734).

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

75868866 is a wasteful number, since it uses less digits than its factorization.

75868866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1404990 (or 1404984 counting only the distinct ones).

The product of its digits is 3870720, while the sum is 54.

The square root of 75868866 is about 8710.2735892738. The cubic root of 75868866 is about 423.3385951496.

Subtracting from 75868866 its reverse (66886857), we obtain a square (8982009 = 2997²).

The spelling of 75868866 in words is "seventy-five million, eight hundred sixty-eight thousand, eight hundred sixty-six".