66147002 has 8 divisors (see below), whose sum is σ = 99256212. Its totient is φ = 33061600.

The previous prime is 66146989. The next prime is 66147007. The reversal of 66147002 is 20074166.

It can be written as a sum of positive squares in 2 ways, for example, as 56715961 + 9431041 = 7531^2 + 3071^2 .

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

It is not an unprimeable number, because it can be changed into a prime (66147007) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5102 + ... + 12582.

Almost surely, 2^66147002 is an apocalyptic number.

66147002 is a deficient number, since it is larger than the sum of its proper divisors (33109210).

66147002 is a wasteful number, since it uses less digits than its factorization.

66147002 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11904.

The product of its (nonzero) digits is 2016, while the sum is 26.

The square root of 66147002 is about 8133.0807201208. The cubic root of 66147002 is about 404.4238151189.

The spelling of 66147002 in words is "sixty-six million, one hundred forty-seven thousand, two".