647777706006 has 32 divisors (see below), whose sum is σ = 1376253964800. Its totient is φ = 202684667040.

The previous prime is 647777705989. The next prime is 647777706011. The reversal of 647777706006 is 600607777746.

It is a Harshad number since it is a multiple of its sum of digits (57).

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, 26052990 + ... + 26077841.

It is an arithmetic number, because the mean of its divisors is an integer number (43007936400).

Almost surely, 2^647777706006 is an apocalyptic number.

647777706006 is an abundant number, since it is smaller than the sum of its proper divisors (728476258794).

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

647777706006 is a wasteful number, since it uses less digits than its factorization.

647777706006 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52130964.

The product of its (nonzero) digits is 14521248, while the sum is 57.

The spelling of 647777706006 in words is "six hundred forty-seven billion, seven hundred seventy-seven million, seven hundred six thousand, six".