66249527 has 8 divisors (see below), whose sum is σ = 70769376. Its totient is φ = 61798912.

The previous prime is 66249517. The next prime is 66249529. The reversal of 66249527 is 72594266.

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 66249527 - 2¹⁰ = 66248503 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 (66249529) 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, 15323 + ... + 19164.

It is an arithmetic number, because the mean of its divisors is an integer number (8846172).

Almost surely, 2^66249527 is an apocalyptic number.

66249527 is a deficient number, since it is larger than the sum of its proper divisors (4519849).

66249527 is a wasteful number, since it uses less digits than its factorization.

66249527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34617.

The product of its digits is 181440, while the sum is 41.

The square root of 66249527 is about 8139.3812418390. The cubic root of 66249527 is about 404.6326537489.

The spelling of 66249527 in words is "sixty-six million, two hundred forty-nine thousand, five hundred twenty-seven".