66384004 has 6 divisors (see below), whose sum is σ = 116172014. Its totient is φ = 33192000.

The previous prime is 66383983. The next prime is 66384007. The reversal of 66384004 is 40048366.

66384004 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 35046400 + 31337604 = 5920^2 + 5598^2 .

It is a pancake number, because a pancake can be divided into 66384004 parts by 11522 straight cuts.

It is not an unprimeable number, because it can be changed into a prime (66384007) by changing a digit.

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, 8297997 + ... + 8298004.

Almost surely, 2^66384004 is an apocalyptic number.

It is an amenable number.

66384004 is a deficient number, since it is larger than the sum of its proper divisors (49788010).

66384004 is a wasteful number, since it uses less digits than its factorization.

66384004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16596005 (or 16596003 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The square root of 66384004 is about 8147.6379399185. The cubic root of 66384004 is about 404.9062507184.

The spelling of 66384004 in words is "sixty-six million, three hundred eighty-four thousand, four".