647327394072 has 24 divisors (see below), whose sum is σ = 1753178359140. Its totient is φ = 215775798000.

The previous prime is 647327394053. The next prime is 647327394079. The reversal of 647327394072 is 270493723746.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (647327394079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4495329054 + ... + 4495329197.

Almost surely, 2^647327394072 is an apocalyptic number.

It is an amenable number.

647327394072 is an abundant number, since it is smaller than the sum of its proper divisors (1105850965068).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

647327394072 is a wasteful number, since it uses less digits than its factorization.

647327394072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8990658263 (or 8990658256 counting only the distinct ones).

The product of its (nonzero) digits is 10668672, while the sum is 54.

The spelling of 647327394072 in words is "six hundred forty-seven billion, three hundred twenty-seven million, three hundred ninety-four thousand, seventy-two".