2167565648 has 10 divisors (see below), whose sum is σ = 4199658474. Its totient is φ = 1083782816.

The previous prime is 2167565623. The next prime is 2167565669. The reversal of 2167565648 is 8465657612.

It can be written as a sum of positive squares in only one way, i.e., 1874197264 + 293368384 = 43292^2 + 17128^2 .

It is a super-3 number, since 3×2167565648³ (a number of 29 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2167565596 and 2167565605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67736411 + ... + 67736442.

Almost surely, 2^2167565648 is an apocalyptic number.

It is an amenable number.

2167565648 is a deficient number, since it is larger than the sum of its proper divisors (2032092826).

2167565648 is a wasteful number, since it uses less digits than its factorization.

2167565648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135472861 (or 135472855 counting only the distinct ones).

The product of its digits is 2419200, while the sum is 50.

The square root of 2167565648 is about 46557.1224196685. The cubic root of 2167565648 is about 1294.1682863276.

The spelling of 2167565648 in words is "two billion, one hundred sixty-seven million, five hundred sixty-five thousand, six hundred forty-eight".