169668648 has 32 divisors (see below), whose sum is σ = 471302400. Its totient is φ = 56556144.

The previous prime is 169668641. The next prime is 169668649. The reversal of 169668648 is 846866961.

It is a super-2 number, since 2×169668648² = 57574900228295808, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 169668594 and 169668603.

It is not an unprimeable number, because it can be changed into a prime (169668641) by changing a digit.

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, 392536 + ... + 392967.

It is an arithmetic number, because the mean of its divisors is an integer number (14728200).

Almost surely, 2^169668648 is an apocalyptic number.

169668648 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

169668648 is an abundant number, since it is smaller than the sum of its proper divisors (301633752).

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

169668648 is a wasteful number, since it uses less digits than its factorization.

169668648 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 785518 (or 785508 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 169668648 is about 13025.6918434300. The cubic root of 169668648 is about 553.6056745523.

The spelling of 169668648 in words is "one hundred sixty-nine million, six hundred sixty-eight thousand, six hundred forty-eight".