168800640 has 64 divisors (see below), whose sum is σ = 538058160. Its totient is φ = 45012992.

The previous prime is 168800629. The next prime is 168800683. The reversal of 168800640 is 46008861.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42039 + ... + 45878.

Almost surely, 2^168800640 is an apocalyptic number.

168800640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168800640 is an abundant number, since it is smaller than the sum of its proper divisors (369257520).

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

168800640 is an equidigital number, since it uses as much as digits as its factorization.

168800640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87939 (or 87927 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 168800640 is about 12992.3300450689. The cubic root of 168800640 is about 552.6599961136.

The spelling of 168800640 in words is "one hundred sixty-eight million, eight hundred thousand, six hundred forty".