16662210 has 64 divisors (see below), whose sum is σ = 43535232. Its totient is φ = 4064256.

The previous prime is 16662203. The next prime is 16662229. The reversal of 16662210 is 1226661.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18429 + ... + 19311.

It is an arithmetic number, because the mean of its divisors is an integer number (680238).

Almost surely, 2^16662210 is an apocalyptic number.

16662210 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 16662210, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21767616).

16662210 is an abundant number, since it is smaller than the sum of its proper divisors (26873022).

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

16662210 is a wasteful number, since it uses less digits than its factorization.

16662210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 947.

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 16662210 is about 4081.9370401808. The cubic root of 16662210 is about 255.4137075301.

Adding to 16662210 its reverse (1226661), we get a palindrome (17888871).

The spelling of 16662210 in words is "sixteen million, six hundred sixty-two thousand, two hundred ten".