16668750 has 96 divisors (see below), whose sum is σ = 47996928. Its totient is φ = 3780000.

The previous prime is 16668749. The next prime is 16668791. The reversal of 16668750 is 5786661.

It is a junction number, because it is equal to n+sod(n) for n = 16668699 and 16668708.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 131187 + ... + 131313.

It is an arithmetic number, because the mean of its divisors is an integer number (499968).

Almost surely, 2^16668750 is an apocalyptic number.

16668750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 16668750, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23998464).

16668750 is an abundant number, since it is smaller than the sum of its proper divisors (31328178).

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

16668750 is an equidigital number, since it uses as much as digits as its factorization.

16668750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The square root of 16668750 is about 4082.7380518471. The cubic root of 16668750 is about 255.4471202076.

The spelling of 16668750 in words is "sixteen million, six hundred sixty-eight thousand, seven hundred fifty".