66484564 has 12 divisors (see below), whose sum is σ = 116409888. Its totient is φ = 33224600.

The previous prime is 66484549. The next prime is 66484573. The reversal of 66484564 is 46548466.

It is a self number, because there is not a number n which added to its sum of digits gives 66484564.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7779 + ... + 13909.

It is an arithmetic number, because the mean of its divisors is an integer number (9700824).

Almost surely, 2^66484564 is an apocalyptic number.

It is an amenable number.

66484564 is a deficient number, since it is larger than the sum of its proper divisors (49925324).

66484564 is a wasteful number, since it uses less digits than its factorization.

66484564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8846 (or 8844 counting only the distinct ones).

The product of its digits is 552960, while the sum is 43.

The square root of 66484564 is about 8153.8067183371. The cubic root of 66484564 is about 405.1106013026.

The spelling of 66484564 in words is "sixty-six million, four hundred eighty-four thousand, five hundred sixty-four".