75536644 has 24 divisors (see below), whose sum is σ = 140795928. Its totient is φ = 35335680.

The previous prime is 75536641. The next prime is 75536653. The reversal of 75536644 is 44663557.

It can be written as a sum of positive squares in 4 ways, for example, as 28751044 + 46785600 = 5362^2 + 6840^2 .

It is a junction number, because it is equal to n+sod(n) for n = 75536597 and 75536606.

It is not an unprimeable number, because it can be changed into a prime (75536641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8554 + ... + 14974.

It is an arithmetic number, because the mean of its divisors is an integer number (5866497).

Almost surely, 2^75536644 is an apocalyptic number.

It is an amenable number.

75536644 is a deficient number, since it is larger than the sum of its proper divisors (65259284).

75536644 is a wasteful number, since it uses less digits than its factorization.

75536644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6615 (or 6613 counting only the distinct ones).

The product of its digits is 302400, while the sum is 40.

The square root of 75536644 is about 8691.1819679489. The cubic root of 75536644 is about 422.7197722197.

The spelling of 75536644 in words is "seventy-five million, five hundred thirty-six thousand, six hundred forty-four".