66130564 has 24 divisors (see below), whose sum is σ = 125753600. Its totient is φ = 30313440.

The previous prime is 66130553. The next prime is 66130609. The reversal of 66130564 is 46503166.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11679 + ... + 16390.

Almost surely, 2^66130564 is an apocalyptic number.

It is an amenable number.

66130564 is a deficient number, since it is larger than the sum of its proper divisors (59623036).

66130564 is a wasteful number, since it uses less digits than its factorization.

66130564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28123 (or 28121 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 66130564 is about 8132.0700931559. The cubic root of 66130564 is about 404.3903116129.

The spelling of 66130564 in words is "sixty-six million, one hundred thirty thousand, five hundred sixty-four".