6647646467466 has 24 divisors (see below), whose sum is σ = 15250483073124. Its totient is φ = 2085536146560.

The previous prime is 6647646467461. The next prime is 6647646467537.

6647646467466 is a `hidden beast` number, since 6 + 6 + 47 + 6 + 4 + 64 + 67 + 466 = 666.

6647646467466 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 6114388707441 + 533257760025 = 2472729^2 + 730245^2 .

It is a super-2 number, since 2×6647646467466² (a number of 26 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 6647646467394 and 6647646467403.

It is not an unprimeable number, because it can be changed into a prime (6647646467461) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10862167125 + ... + 10862167736.

Almost surely, 2^{6647646467466} is an apocalyptic number.

6647646467466 is an abundant number, since it is smaller than the sum of its proper divisors (8602836605658).

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

6647646467466 is a wasteful number, since it uses less digits than its factorization.

6647646467466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21724334886 (or 21724334883 counting only the distinct ones).

The product of its digits is 3511517184, while the sum is 72.

The spelling of 6647646467466 in words is "six trillion, six hundred forty-seven billion, six hundred forty-six million, four hundred sixty-seven thousand, four hundred sixty-six".