75660072 has 32 divisors (see below), whose sum is σ = 195674400. Its totient is φ = 24350144.

The previous prime is 75660049. The next prime is 75660089. The reversal of 75660072 is 27006657.

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 7 ways as a sum of consecutive naturals, for example, 53658 + ... + 55049.

It is an arithmetic number, because the mean of its divisors is an integer number (6114825).

Almost surely, 2^75660072 is an apocalyptic number.

It is an amenable number.

75660072 is an abundant number, since it is smaller than the sum of its proper divisors (120014328).

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

75660072 is a wasteful number, since it uses less digits than its factorization.

75660072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108745 (or 108741 counting only the distinct ones).

The product of its (nonzero) digits is 17640, while the sum is 33.

The square root of 75660072 is about 8698.2798299434. The cubic root of 75660072 is about 422.9498903917.

The spelling of 75660072 in words is "seventy-five million, six hundred sixty thousand, seventy-two".