168820704 has 144 divisors (see below), whose sum is σ = 525509712. Its totient is φ = 51093504.

The previous prime is 168820703. The next prime is 168820711. The reversal of 168820704 is 407028861.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168820703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 250512 + ... + 251184.

It is an arithmetic number, because the mean of its divisors is an integer number (3649373).

Almost surely, 2^168820704 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168820704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (262754856).

168820704 is an abundant number, since it is smaller than the sum of its proper divisors (356689008).

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

168820704 is a wasteful number, since it uses less digits than its factorization.

168820704 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 769 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The square root of 168820704 is about 12993.1021699977. The cubic root of 168820704 is about 552.6818920236.

The spelling of 168820704 in words is "one hundred sixty-eight million, eight hundred twenty thousand, seven hundred four".