66165004 has 6 divisors (see below), whose sum is σ = 115788764. Its totient is φ = 33082500.

The previous prime is 66164993. The next prime is 66165017. The reversal of 66165004 is 40056166.

66165004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8270622 + ... + 8270629.

Almost surely, 2^66165004 is an apocalyptic number.

It is an amenable number.

66165004 is a deficient number, since it is larger than the sum of its proper divisors (49623760).

66165004 is a wasteful number, since it uses less digits than its factorization.

66165004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16541255 (or 16541253 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 66165004 is about 8134.1873595338. The cubic root of 66165004 is about 404.4604999619.

The spelling of 66165004 in words is "sixty-six million, one hundred sixty-five thousand, four".