16987660 has 12 divisors (see below), whose sum is σ = 35674128. Its totient is φ = 6795056.

The previous prime is 16987657. The next prime is 16987661. The reversal of 16987660 is 6678961.

It is not an unprimeable number, because it can be changed into a prime (16987661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 424672 + ... + 424711.

It is an arithmetic number, because the mean of its divisors is an integer number (2972844).

Almost surely, 2^16987660 is an apocalyptic number.

16987660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16987660 is an abundant number, since it is smaller than the sum of its proper divisors (18686468).

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

16987660 is a wasteful number, since it uses less digits than its factorization.

16987660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849392 (or 849390 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 16987660 is about 4121.6089091519. The cubic root of 16987660 is about 257.0659290751.

The spelling of 16987660 in words is "sixteen million, nine hundred eighty-seven thousand, six hundred sixty".