647579479206 has 32 divisors (see below), whose sum is σ = 1412955040896. Its totient is φ = 196228656000.

The previous prime is 647579479181. The next prime is 647579479223. The reversal of 647579479206 is 602974975746.

It is a Harshad number since it is a multiple of its sum of digits (66).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1678641 + ... + 2028051.

It is an arithmetic number, because the mean of its divisors is an integer number (44154845028).

Almost surely, 2^647579479206 is an apocalyptic number.

647579479206 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

647579479206 is an abundant number, since it is smaller than the sum of its proper divisors (765375561690).

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

647579479206 is a wasteful number, since it uses less digits than its factorization.

647579479206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 377508.

The product of its (nonzero) digits is 160030080, while the sum is 66.

The spelling of 647579479206 in words is "six hundred forty-seven billion, five hundred seventy-nine million, four hundred seventy-nine thousand, two hundred six".