16870987 has 8 divisors (see below), whose sum is σ = 20415456. Its totient is φ = 13610112.

The previous prime is 16870981. The next prime is 16870999. The reversal of 16870987 is 78907861.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16870987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16870981) 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, 70768 + ... + 71005.

It is an arithmetic number, because the mean of its divisors is an integer number (2551932).

Almost surely, 2^16870987 is an apocalyptic number.

16870987 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

16870987 is a deficient number, since it is larger than the sum of its proper divisors (3544469).

16870987 is a wasteful number, since it uses less digits than its factorization.

16870987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 141797.

The product of its (nonzero) digits is 169344, while the sum is 46.

The square root of 16870987 is about 4107.4307054411. The cubic root of 16870987 is about 256.4760581422.

The spelling of 16870987 in words is "sixteen million, eight hundred seventy thousand, nine hundred eighty-seven".