106212666 has 64 divisors (see below), whose sum is σ = 259319808. Its totient is φ = 28340928.

The previous prime is 106212653. The next prime is 106212677. The reversal of 106212666 is 666212601.

It is a super-2 number, since 2×106212666² = 22562260837655112, which contains 22 as substring.

It is a Curzon number.

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, 40260 + ... + 42816.

It is an arithmetic number, because the mean of its divisors is an integer number (4051872).

Almost surely, 2^106212666 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 106212666, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (129659904).

106212666 is an abundant number, since it is smaller than the sum of its proper divisors (153107142).

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

106212666 is a wasteful number, since it uses less digits than its factorization.

106212666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 106212666 is about 10305.9529399275. The cubic root of 106212666 is about 473.5786370943.

The spelling of 106212666 in words is "one hundred six million, two hundred twelve thousand, six hundred sixty-six".