66852487 has 16 divisors (see below), whose sum is σ = 74954880. Its totient is φ = 59224032.

The previous prime is 66852481. The next prime is 66852491. The reversal of 66852487 is 78425866.

It is a cyclic number.

It is not a de Polignac number, because 66852487 - 2³ = 66852479 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66852481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31968 + ... + 33994.

It is an arithmetic number, because the mean of its divisors is an integer number (4684680).

Almost surely, 2^66852487 is an apocalyptic number.

66852487 is a deficient number, since it is larger than the sum of its proper divisors (8102393).

66852487 is a wasteful number, since it uses less digits than its factorization.

66852487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2142.

The product of its digits is 645120, while the sum is 46.

The square root of 66852487 is about 8176.3370160482. The cubic root of 66852487 is about 405.8565158241.

The spelling of 66852487 in words is "sixty-six million, eight hundred fifty-two thousand, four hundred eighty-seven".