6815671164 has 36 divisors (see below), whose sum is σ = 17263635480. Its totient is φ = 2267257440.

The previous prime is 6815671153. The next prime is 6815671217. The reversal of 6815671164 is 4611765186.

6815671164 is a `hidden beast` number, since 6 + 81 + 567 + 1 + 1 + 6 + 4 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×6815671164² = 92906746831562229792, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 175119 + ... + 210470.

It is an arithmetic number, because the mean of its divisors is an integer number (479545430).

Almost surely, 2^6815671164 is an apocalyptic number.

It is an amenable number.

6815671164 is an abundant number, since it is smaller than the sum of its proper divisors (10447964316).

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

6815671164 is a wasteful number, since it uses less digits than its factorization.

6815671164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 386090 (or 386085 counting only the distinct ones).

The product of its digits is 241920, while the sum is 45.

The square root of 6815671164 is about 82557.0782186482. The cubic root of 6815671164 is about 1895.9907299392.

The spelling of 6815671164 in words is "six billion, eight hundred fifteen million, six hundred seventy-one thousand, one hundred sixty-four".