66004485 has 16 divisors (see below), whose sum is σ = 108462336. Its totient is φ = 34250688.

The previous prime is 66004459. The next prime is 66004507. The reversal of 66004485 is 58440066.

It is a happy number.

It is not a de Polignac number, because 66004485 - 2⁵ = 66004453 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58909 + ... + 60018.

It is an arithmetic number, because the mean of its divisors is an integer number (6778896).

Almost surely, 2^66004485 is an apocalyptic number.

It is an amenable number.

66004485 is a deficient number, since it is larger than the sum of its proper divisors (42457851).

66004485 is a wasteful number, since it uses less digits than its factorization.

66004485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 118972.

The product of its (nonzero) digits is 23040, while the sum is 33.

The square root of 66004485 is about 8124.3144326152. The cubic root of 66004485 is about 404.1331558758.

The spelling of 66004485 in words is "sixty-six million, four thousand, four hundred eighty-five".