6467605681 has 16 divisors (see below), whose sum is σ = 7521897600. Its totient is φ = 5516045568.

The previous prime is 6467605673. The next prime is 6467605777. The reversal of 6467605681 is 1865067646.

6467605681 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 6467605681 - 2³ = 6467605673 is a prime.

It is a super-2 number, since 2×6467605681² = 83659846489806947522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6467605181) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 427866 + ... + 442723.

It is an arithmetic number, because the mean of its divisors is an integer number (470118600).

Almost surely, 2^6467605681 is an apocalyptic number.

It is an amenable number.

6467605681 is a deficient number, since it is larger than the sum of its proper divisors (1054291919).

6467605681 is a wasteful number, since it uses less digits than its factorization.

6467605681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 870648.

The product of its (nonzero) digits is 1451520, while the sum is 49.

The square root of 6467605681 is about 80421.4255096240. The cubic root of 6467605681 is about 1863.1501019969.

The spelling of 6467605681 in words is "six billion, four hundred sixty-seven million, six hundred five thousand, six hundred eighty-one".