75705040 has 40 divisors (see below), whose sum is σ = 176417280. Its totient is φ = 30212736.

The previous prime is 75705017. The next prime is 75705061. The reversal of 75705040 is 4050757.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47781 + ... + 49339.

It is an arithmetic number, because the mean of its divisors is an integer number (4410432).

Almost surely, 2^75705040 is an apocalyptic number.

It is an amenable number.

75705040 is an abundant number, since it is smaller than the sum of its proper divisors (100712240).

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

75705040 is a wasteful number, since it uses less digits than its factorization.

75705040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2179 (or 2173 counting only the distinct ones).

The product of its (nonzero) digits is 4900, while the sum is 28.

The square root of 75705040 is about 8700.8643248818. The cubic root of 75705040 is about 423.0336661686.

Adding to 75705040 its reverse (4050757), we get a palindrome (79755797).

The spelling of 75705040 in words is "seventy-five million, seven hundred five thousand, forty".