169220568 has 192 divisors, whose sum is σ = 514771200. Its totient is φ = 45830400.

The previous prime is 169220563. The next prime is 169220581. The reversal of 169220568 is 865022961.

It is a nialpdrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (169220561) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5458713 + ... + 5458743.

It is an arithmetic number, because the mean of its divisors is an integer number (2681100).

Almost surely, 2^169220568 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 169220568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (257385600).

169220568 is an abundant number, since it is smaller than the sum of its proper divisors (345550632).

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

169220568 is a wasteful number, since it uses less digits than its factorization.

169220568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134 (or 99 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 39.

The square root of 169220568 is about 13008.4806184273. The cubic root of 169220568 is about 553.1179035893.

The spelling of 169220568 in words is "one hundred sixty-nine million, two hundred twenty thousand, five hundred sixty-eight".