168806560 has 48 divisors (see below), whose sum is σ = 429488136. Its totient is φ = 62327808.

The previous prime is 168806551. The next prime is 168806609. The reversal of 168806560 is 65608861.

168806560 = T₁₇₄ + T₁₇₅ + ... + T₁₀₀₅.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 92698384 + 76108176 = 9628^2 + 8724^2 .

It is a Harshad number since it is a multiple of its sum of digits (40).

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, 38499 + ... + 42658.

Almost surely, 2^168806560 is an apocalyptic number.

168806560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

168806560 is an abundant number, since it is smaller than the sum of its proper divisors (260681576).

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

168806560 is a wasteful number, since it uses less digits than its factorization.

168806560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81185 (or 81177 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 40.

The square root of 168806560 is about 12992.5578697961. The cubic root of 168806560 is about 552.6664568098. Note that the first 3 decimals are identical.

The spelling of 168806560 in words is "one hundred sixty-eight million, eight hundred six thousand, five hundred sixty".