66522589 has 8 divisors (see below), whose sum is σ = 76272768. Its totient is φ = 56834160.

The previous prime is 66522587. The next prime is 66522593. The reversal of 66522589 is 98522566.

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

It is a cyclic number.

It is not a de Polignac number, because 66522589 - 2¹ = 66522587 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 (66522587) 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, 13102 + ... + 17455.

It is an arithmetic number, because the mean of its divisors is an integer number (9534096).

Almost surely, 2^66522589 is an apocalyptic number.

It is an amenable number.

66522589 is a deficient number, since it is larger than the sum of its proper divisors (9750179).

66522589 is a wasteful number, since it uses less digits than its factorization.

66522589 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30875.

The product of its digits is 259200, while the sum is 43.

The square root of 66522589 is about 8156.1381180066. The cubic root of 66522589 is about 405.1878192003.

The spelling of 66522589 in words is "sixty-six million, five hundred twenty-two thousand, five hundred eighty-nine".