66260589 has 8 divisors (see below), whose sum is σ = 89340480. Its totient is φ = 43677216.

The previous prime is 66260531. The next prime is 66260627. The reversal of 66260589 is 98506266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66260589 - 2¹⁶ = 66195053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66260589.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66262589) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 123817 + ... + 124350.

It is an arithmetic number, because the mean of its divisors is an integer number (11167560).

Almost surely, 2^66260589 is an apocalyptic number.

It is an amenable number.

66260589 is a deficient number, since it is larger than the sum of its proper divisors (23079891).

66260589 is a wasteful number, since it uses less digits than its factorization.

66260589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248259.

The product of its (nonzero) digits is 155520, while the sum is 42.

The square root of 66260589 is about 8140.0607491591. The cubic root of 66260589 is about 404.6551736446.

The spelling of 66260589 in words is "sixty-six million, two hundred sixty thousand, five hundred eighty-nine".