75999312 has 60 divisors (see below), whose sum is σ = 213311124. Its totient is φ = 25259520.

The previous prime is 75999311. The next prime is 75999331. The reversal of 75999312 is 21399957.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 6843456 + 69155856 = 2616^2 + 8316^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75999311) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 74518 + ... + 75530.

Almost surely, 2^75999312 is an apocalyptic number.

75999312 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

75999312 is an abundant number, since it is smaller than the sum of its proper divisors (137311812).

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

75999312 is a wasteful number, since it uses less digits than its factorization.

75999312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1548 (or 1539 counting only the distinct ones).

The product of its digits is 153090, while the sum is 45.

The square root of 75999312 is about 8717.7584274858. The cubic root of 75999312 is about 423.5810802433.

The spelling of 75999312 in words is "seventy-five million, nine hundred ninety-nine thousand, three hundred twelve".