647051066 has 8 divisors (see below), whose sum is σ = 971085024. Its totient is φ = 323356060.

The previous prime is 647051039. The next prime is 647051077. The reversal of 647051066 is 660150746.

647051066 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 79910 + ... + 87633.

It is an arithmetic number, because the mean of its divisors is an integer number (121385628).

Almost surely, 2^647051066 is an apocalyptic number.

647051066 is a deficient number, since it is larger than the sum of its proper divisors (324033958).

647051066 is a wasteful number, since it uses less digits than its factorization.

647051066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169476.

The product of its (nonzero) digits is 30240, while the sum is 35.

The square root of 647051066 is about 25437.1984699573. The cubic root of 647051066 is about 864.9271285243.

The spelling of 647051066 in words is "six hundred forty-seven million, fifty-one thousand, sixty-six".