66524471 has 8 divisors (see below), whose sum is σ = 71717184. Its totient is φ = 61342560.

The previous prime is 66524467. The next prime is 66524473. The reversal of 66524471 is 17442566.

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 66524471 - 2² = 66524467 is a prime.

It is a super-3 number, since 3×66524471³ (a number of 24 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66524473) 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 7 ways as a sum of consecutive naturals, for example, 13925 + ... + 18081.

It is an arithmetic number, because the mean of its divisors is an integer number (8964648).

Almost surely, 2^66524471 is an apocalyptic number.

66524471 is a deficient number, since it is larger than the sum of its proper divisors (5192713).

66524471 is a wasteful number, since it uses less digits than its factorization.

66524471 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5401.

The product of its digits is 40320, while the sum is 35.

The square root of 66524471 is about 8156.2534904207. The cubic root of 66524471 is about 405.1916402396.

The spelling of 66524471 in words is "sixty-six million, five hundred twenty-four thousand, four hundred seventy-one".