16516680 has 32 divisors (see below), whose sum is σ = 49550400. Its totient is φ = 4404416.

The previous prime is 16516667. The next prime is 16516699. The reversal of 16516680 is 8661561.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 68700 + ... + 68939.

It is an arithmetic number, because the mean of its divisors is an integer number (1548450).

Almost surely, 2^16516680 is an apocalyptic number.

16516680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16516680 is an abundant number, since it is smaller than the sum of its proper divisors (33033720).

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

16516680 is a wasteful number, since it uses less digits than its factorization.

16516680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137653 (or 137649 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 33.

The square root of 16516680 is about 4064.0718497586. The cubic root of 16516680 is about 254.6679260679.

The spelling of 16516680 in words is "sixteen million, five hundred sixteen thousand, six hundred eighty".