75649144 has 16 divisors (see below), whose sum is σ = 142205400. Its totient is φ = 37727712.

The previous prime is 75649121. The next prime is 75649183. The reversal of 75649144 is 44194657.

It is a junction number, because it is equal to n+sod(n) for n = 75649097 and 75649106.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8734 + ... + 15085.

Almost surely, 2^75649144 is an apocalyptic number.

It is an amenable number.

75649144 is a deficient number, since it is larger than the sum of its proper divisors (66556256).

75649144 is a wasteful number, since it uses less digits than its factorization.

75649144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24222 (or 24218 counting only the distinct ones).

The product of its digits is 120960, while the sum is 40.

The square root of 75649144 is about 8697.6516370800. The cubic root of 75649144 is about 422.9295264189.

The spelling of 75649144 in words is "seventy-five million, six hundred forty-nine thousand, one hundred forty-four".