16860987 has 48 divisors (see below), whose sum is σ = 29643040. Its totient is φ = 9408960.

The previous prime is 16860973. The next prime is 16861003. The reversal of 16860987 is 78906861.

It is a happy number.

It is not a de Polignac number, because 16860987 - 2⁴ = 16860971 is a prime.

It is a super-2 number, since 2×16860987² = 568585765228338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16860917) 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 47 ways as a sum of consecutive naturals, for example, 42273 + ... + 42669.

Almost surely, 2^16860987 is an apocalyptic number.

16860987 is a deficient number, since it is larger than the sum of its proper divisors (12782053).

16860987 is a wasteful number, since it uses less digits than its factorization.

16860987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 441 (or 424 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 45.

The square root of 16860987 is about 4106.2132190134. The cubic root of 16860987 is about 256.4253741388.

The spelling of 16860987 in words is "sixteen million, eight hundred sixty thousand, nine hundred eighty-seven".