66480587 has 8 divisors (see below), whose sum is σ = 67069680. Its totient is φ = 65894400.

The previous prime is 66480581. The next prime is 66480611. The reversal of 66480587 is 78508466.

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 66480587 - 2⁴ = 66480571 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66480581) 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, 76964 + ... + 77822.

It is an arithmetic number, because the mean of its divisors is an integer number (8383710).

Almost surely, 2^66480587 is an apocalyptic number.

66480587 is a deficient number, since it is larger than the sum of its proper divisors (589093).

66480587 is a wasteful number, since it uses less digits than its factorization.

66480587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1453.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 66480587 is about 8153.5628408690. The cubic root of 66480587 is about 405.1025234527.

The spelling of 66480587 in words is "sixty-six million, four hundred eighty thousand, five hundred eighty-seven".