16650680 has 32 divisors (see below), whose sum is σ = 37581840. Its totient is φ = 6639360.

The previous prime is 16650679. The next prime is 16650691. The reversal of 16650680 is 8605661.

16650680 = T₂₄₆ + T₂₄₇ + ... + T₄₈₅.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21500 + ... + 22260.

Almost surely, 2^16650680 is an apocalyptic number.

16650680 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16650680 is an abundant number, since it is smaller than the sum of its proper divisors (20931160).

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

16650680 is a wasteful number, since it uses less digits than its factorization.

16650680 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1319 (or 1315 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 16650680 is about 4080.5244760937. The cubic root of 16650680 is about 255.3547797811.

The spelling of 16650680 in words is "sixteen million, six hundred fifty thousand, six hundred eighty".