65457589 has 4 divisors (see below), whose sum is σ = 65743660. Its totient is φ = 65171520.

The previous prime is 65457577. The next prime is 65457649. The reversal of 65457589 is 98575456.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 57380625 + 8076964 = 7575^2 + 2842^2 .

It is a cyclic number.

It is not a de Polignac number, because 65457589 - 2¹¹ = 65455541 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65457529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142692 + ... + 143149.

It is an arithmetic number, because the mean of its divisors is an integer number (16435915).

Almost surely, 2^65457589 is an apocalyptic number.

It is an amenable number.

65457589 is a deficient number, since it is larger than the sum of its proper divisors (286071).

65457589 is a wasteful number, since it uses less digits than its factorization.

65457589 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286070.

The product of its digits is 1512000, while the sum is 49.

The square root of 65457589 is about 8090.5864435157. The cubic root of 65457589 is about 403.0138780633.

The spelling of 65457589 in words is "sixty-five million, four hundred fifty-seven thousand, five hundred eighty-nine".