16966620 has 216 divisors, whose sum is σ = 60999120. Its totient is φ = 3801600.

The previous prime is 16966603. The next prime is 16966627. The reversal of 16966620 is 2666961.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16966627) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 413800 + ... + 413840.

Almost surely, 2^16966620 is an apocalyptic number.

16966620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16966620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30499560).

16966620 is an abundant number, since it is smaller than the sum of its proper divisors (44032500).

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

16966620 is a wasteful number, since it uses less digits than its factorization.

16966620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97 (or 81 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 36.

The square root of 16966620 is about 4119.0557170303. The cubic root of 16966620 is about 256.9597558952.

The spelling of 16966620 in words is "sixteen million, nine hundred sixty-six thousand, six hundred twenty".