647190670722 has 48 divisors (see below), whose sum is σ = 1356069519840. Its totient is φ = 205898654016.

The previous prime is 647190670703. The next prime is 647190670727. The reversal of 647190670722 is 227076091746.

It is not an unprimeable number, because it can be changed into a prime (647190670727) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1227429 + ... + 1673607.

It is an arithmetic number, because the mean of its divisors is an integer number (28251448330).

Almost surely, 2^647190670722 is an apocalyptic number.

647190670722 is an abundant number, since it is smaller than the sum of its proper divisors (708878849118).

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

647190670722 is a wasteful number, since it uses less digits than its factorization.

647190670722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446687 (or 446664 counting only the distinct ones).

The product of its (nonzero) digits is 1778112, while the sum is 51.

The spelling of 647190670722 in words is "six hundred forty-seven billion, one hundred ninety million, six hundred seventy thousand, seven hundred twenty-two".