168560644 has 48 divisors (see below), whose sum is σ = 369290880. Its totient is φ = 65640960.

The previous prime is 168560621. The next prime is 168560657. The reversal of 168560644 is 446065861.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 168560597 and 168560606.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7699 + ... + 19909.

It is an arithmetic number, because the mean of its divisors is an integer number (7693560).

Almost surely, 2^168560644 is an apocalyptic number.

168560644 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 168560644, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184645440).

168560644 is an abundant number, since it is smaller than the sum of its proper divisors (200730236).

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

168560644 is a wasteful number, since it uses less digits than its factorization.

168560644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12268 (or 12266 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The square root of 168560644 is about 12983.0906952081. The cubic root of 168560644 is about 552.3979530756.

The spelling of 168560644 in words is "one hundred sixty-eight million, five hundred sixty thousand, six hundred forty-four".