163870560 has 192 divisors, whose sum is σ = 655603200. Its totient is φ = 37449216.

The previous prime is 163870559. The next prime is 163870579. The reversal of 163870560 is 65078361.

163870560 is a `hidden beast` number, since 16 + 3 + 87 + 0 + 560 = 666.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27531 + ... + 32949.

It is an arithmetic number, because the mean of its divisors is an integer number (3414600).

Almost surely, 2^163870560 is an apocalyptic number.

163870560 is a gapful number since it is divisible by the number (10) 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 163870560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (327801600).

163870560 is an abundant number, since it is smaller than the sum of its proper divisors (491732640).

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

163870560 is a wasteful number, since it uses less digits than its factorization.

163870560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5450 (or 5436 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 163870560 is about 12801.1936943396. The cubic root of 163870560 is about 547.2263222179.

The spelling of 163870560 in words is "one hundred sixty-three million, eight hundred seventy thousand, five hundred sixty".