168040648 has 16 divisors (see below), whose sum is σ = 333610380. Its totient is φ = 79077888.

The previous prime is 168040637. The next prime is 168040657. The reversal of 168040648 is 846040861.

It can be written as a sum of positive squares in 2 ways, for example, as 163788804 + 4251844 = 12798^2 + 2062^2 .

It is a super-3 number, since 3×168040648³ (a number of 26 digits) contains 333 as substring.

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, 617661 + ... + 617932.

Almost surely, 2^168040648 is an apocalyptic number.

It is an amenable number.

168040648 is a deficient number, since it is larger than the sum of its proper divisors (165569732).

168040648 is a wasteful number, since it uses less digits than its factorization.

168040648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1235616 (or 1235612 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 37.

The square root of 168040648 is about 12963.0493326223. The cubic root of 168040648 is about 551.8293335725.

The spelling of 168040648 in words is "one hundred sixty-eight million, forty thousand, six hundred forty-eight".