75897945 has 32 divisors (see below), whose sum is σ = 142871040. Its totient is φ = 38096640.

The previous prime is 75897893. The next prime is 75897947. The reversal of 75897945 is 54979857.

It is not a de Polignac number, because 75897945 - 2⁷ = 75897817 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 75897891 and 75897900.

It is not an unprimeable number, because it can be changed into a prime (75897947) by changing a digit.

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 31 ways as a sum of consecutive naturals, for example, 14241 + ... + 18830.

It is an arithmetic number, because the mean of its divisors is an integer number (4464720).

Almost surely, 2^75897945 is an apocalyptic number.

It is an amenable number.

75897945 is a deficient number, since it is larger than the sum of its proper divisors (66973095).

75897945 is a wasteful number, since it uses less digits than its factorization.

75897945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33102 (or 33096 counting only the distinct ones).

The product of its digits is 3175200, while the sum is 54.

The square root of 75897945 is about 8711.9426651006. The cubic root of 75897945 is about 423.3926739447.

The spelling of 75897945 in words is "seventy-five million, eight hundred ninety-seven thousand, nine hundred forty-five".