66004547 has 8 divisors (see below), whose sum is σ = 77273952. Its totient is φ = 55195200.

The previous prime is 66004541. The next prime is 66004607. The reversal of 66004547 is 74540066.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 66004547 - 2⁴ = 66004531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66004541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 114704 + ... + 115277.

It is an arithmetic number, because the mean of its divisors is an integer number (9659244).

Almost surely, 2^66004547 is an apocalyptic number.

66004547 is a deficient number, since it is larger than the sum of its proper divisors (11269405).

66004547 is a wasteful number, since it uses less digits than its factorization.

66004547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 230029.

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 66004547 is about 8124.3182483209. The cubic root of 66004547 is about 404.1332824139.

The spelling of 66004547 in words is "sixty-six million, four thousand, five hundred forty-seven".