66452523 has 8 divisors (see below), whose sum is σ = 88643136. Its totient is φ = 44281800.

The previous prime is 66452471. The next prime is 66452527. The reversal of 66452523 is 32525466.

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

It is not a de Polignac number, because 66452523 - 2⁶ = 66452459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66452527) 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, 6828 + ... + 13398.

It is an arithmetic number, because the mean of its divisors is an integer number (11080392).

Almost surely, 2^66452523 is an apocalyptic number.

66452523 is a deficient number, since it is larger than the sum of its proper divisors (22190613).

66452523 is a wasteful number, since it uses less digits than its factorization.

66452523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9945.

The product of its digits is 43200, while the sum is 33.

The square root of 66452523 is about 8151.8416937524. The cubic root of 66452523 is about 405.0455123369.

Adding to 66452523 its reverse (32525466), we get a palindrome (98977989).

The spelling of 66452523 in words is "sixty-six million, four hundred fifty-two thousand, five hundred twenty-three".