75660540 has 48 divisors (see below), whose sum is σ = 224314272. Its totient is φ = 18989056.

The previous prime is 75660517. The next prime is 75660569. The reversal of 75660540 is 4506657.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36069 + ... + 38108.

It is an arithmetic number, because the mean of its divisors is an integer number (4673214).

Almost surely, 2^75660540 is an apocalyptic number.

It is an amenable number.

75660540 is an abundant number, since it is smaller than the sum of its proper divisors (148653732).

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

75660540 is a wasteful number, since it uses less digits than its factorization.

75660540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 74206 (or 74204 counting only the distinct ones).

The product of its (nonzero) digits is 25200, while the sum is 33.

The square root of 75660540 is about 8698.3067317726. The cubic root of 75660540 is about 422.9507624507.

The spelling of 75660540 in words is "seventy-five million, six hundred sixty thousand, five hundred forty".