647579404975746 has 8 divisors (see below), whose sum is σ = 1295158809951504. Its totient is φ = 215859801658580.

The previous prime is 647579404975717. The next prime is 647579404975801.

647579404975746 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

647579404975746 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53964950414640 + ... + 53964950414651.

It is an arithmetic number, because the mean of its divisors is an integer number (161894851243938).

Almost surely, 2^{647579404975746} is an apocalyptic number.

647579404975746 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

647579404975746 is a wasteful number, since it uses less digits than its factorization.

647579404975746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107929900829296.

The product of its (nonzero) digits is 44808422400, while the sum is 84.

The spelling of 647579404975746 in words is "six hundred forty-seven trillion, five hundred seventy-nine billion, four hundred four million, nine hundred seventy-five thousand, seven hundred forty-six".