75813636 has 12 divisors (see below), whose sum is σ = 176898512. Its totient is φ = 25271208.

The previous prime is 75813613. The next prime is 75813637. The reversal of 75813636 is 63631857.

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 75813594 and 75813603.

It is not an unprimeable number, because it can be changed into a prime (75813637) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3158890 + ... + 3158913.

Almost surely, 2^75813636 is an apocalyptic number.

It is an amenable number.

75813636 is an abundant number, since it is smaller than the sum of its proper divisors (101084876).

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

75813636 is a wasteful number, since it uses less digits than its factorization.

75813636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6317810 (or 6317808 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 75813636 is about 8707.1026179780. The cubic root of 75813636 is about 423.2358447608.

The spelling of 75813636 in words is "seventy-five million, eight hundred thirteen thousand, six hundred thirty-six".