75816212 has 18 divisors (see below), whose sum is σ = 133849674. Its totient is φ = 37575120.

The previous prime is 75816203. The next prime is 75816233. The reversal of 75816212 is 21261857.

It can be written as a sum of positive squares in only one way, i.e., 74063236 + 1752976 = 8606^2 + 1324^2 .

It is a congruent 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 5 ways as a sum of consecutive naturals, for example, 228887 + ... + 229217.

It is an arithmetic number, because the mean of its divisors is an integer number (7436093).

Almost surely, 2^75816212 is an apocalyptic number.

It is an amenable number.

75816212 is a deficient number, since it is larger than the sum of its proper divisors (58033462).

75816212 is a wasteful number, since it uses less digits than its factorization.

75816212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 839 (or 506 counting only the distinct ones).

The product of its digits is 6720, while the sum is 32.

The square root of 75816212 is about 8707.2505419334. The cubic root of 75816212 is about 423.2406382836.

The spelling of 75816212 in words is "seventy-five million, eight hundred sixteen thousand, two hundred twelve".