75859812 has 72 divisors (see below), whose sum is σ = 222470976. Its totient is φ = 21345984.

The previous prime is 75859793. The next prime is 75859813. The reversal of 75859812 is 21895857.

It is a happy number.

75859812 is a `hidden beast` number, since 7 + 58 + 598 + 1 + 2 = 666.

It is a super-2 number, since 2×75859812² = 11509422153350688, which contains 22 as substring.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (75859813) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 14638 + ... + 19130.

Almost surely, 2^75859812 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 75859812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111235488).

75859812 is an abundant number, since it is smaller than the sum of its proper divisors (146611164).

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

75859812 is a wasteful number, since it uses less digits than its factorization.

75859812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4577 (or 4572 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The square root of 75859812 is about 8709.7538426755. The cubic root of 75859812 is about 423.3217544246.

The spelling of 75859812 in words is "seventy-five million, eight hundred fifty-nine thousand, eight hundred twelve".