66887527 has 8 divisors (see below), whose sum is σ = 78509216. Its totient is φ = 55782432.

The previous prime is 66887521. The next prime is 66887531. The reversal of 66887527 is 72578866.

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 66887527 - 2⁷ = 66887399 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 (66887521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 128868 + ... + 129385.

It is an arithmetic number, because the mean of its divisors is an integer number (9813652).

Almost surely, 2^66887527 is an apocalyptic number.

66887527 is a deficient number, since it is larger than the sum of its proper divisors (11621689).

66887527 is a wasteful number, since it uses less digits than its factorization.

66887527 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258297.

The product of its digits is 1128960, while the sum is 49.

The square root of 66887527 is about 8178.4795041621. The cubic root of 66887527 is about 405.9274118572.

The spelling of 66887527 in words is "sixty-six million, eight hundred eighty-seven thousand, five hundred twenty-seven".