647647706495 has 8 divisors (see below), whose sum is σ = 777785851584. Its totient is φ = 517712429344.

The previous prime is 647647706477. The next prime is 647647706507. The reversal of 647647706495 is 594607746746.

It is a happy number.

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 647647706495 - 2²⁴ = 647630929279 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50709959 + ... + 50722728.

It is an arithmetic number, because the mean of its divisors is an integer number (97223231448).

Almost surely, 2^647647706495 is an apocalyptic number.

647647706495 is a deficient number, since it is larger than the sum of its proper divisors (130138145089).

647647706495 is a wasteful number, since it uses less digits than its factorization.

647647706495 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101433969.

The product of its (nonzero) digits is 213373440, while the sum is 65.

The spelling of 647647706495 in words is "six hundred forty-seven billion, six hundred forty-seven million, seven hundred six thousand, four hundred ninety-five".