163359987 has 64 divisors (see below), whose sum is σ = 282009600. Its totient is φ = 81930240.

The previous prime is 163359983. The next prime is 163359997. The reversal of 163359987 is 789953361.

It is not a de Polignac number, because 163359987 - 2² = 163359983 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is not an unprimeable number, because it can be changed into a prime (163359983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 320689 + ... + 321197.

It is an arithmetic number, because the mean of its divisors is an integer number (4406400).

Almost surely, 2^163359987 is an apocalyptic number.

163359987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

163359987 is a deficient number, since it is larger than the sum of its proper divisors (118649613).

163359987 is a wasteful number, since it uses less digits than its factorization.

163359987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 596.

The product of its digits is 1224720, while the sum is 51.

The square root of 163359987 is about 12781.2357383784. The cubic root of 163359987 is about 546.6573982582.

The spelling of 163359987 in words is "one hundred sixty-three million, three hundred fifty-nine thousand, nine hundred eighty-seven".