66004604 has 6 divisors (see below), whose sum is σ = 115508064. Its totient is φ = 33002300.

The previous prime is 66004541. The next prime is 66004607. The reversal of 66004604 is 40640066.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66004607) 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 as a sum of consecutive naturals, namely, 8250572 + ... + 8250579.

It is an arithmetic number, because the mean of its divisors is an integer number (19251344).

Almost surely, 2^66004604 is an apocalyptic number.

It is an amenable number.

66004604 is a deficient number, since it is larger than the sum of its proper divisors (49503460).

66004604 is a wasteful number, since it uses less digits than its factorization.

66004604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16501155 (or 16501153 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 66004604 is about 8124.3217563068. The cubic root of 66004604 is about 404.1333987473.

The spelling of 66004604 in words is "sixty-six million, four thousand, six hundred four".