106866621 has 20 divisors (see below), whose sum is σ = 168044800. Its totient is φ = 67493736.

The previous prime is 106866611. The next prime is 106866629. The reversal of 106866621 is 126668601.

It is not a de Polignac number, because 106866621 - 2⁷ = 106866493 is a prime.

It is a super-2 number, since 2×106866621² = 22840949367915282, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106866629) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33181 + ... + 36258.

It is an arithmetic number, because the mean of its divisors is an integer number (8402240).

Almost surely, 2^106866621 is an apocalyptic number.

It is an amenable number.

106866621 is a deficient number, since it is larger than the sum of its proper divisors (61178179).

106866621 is an equidigital number, since it uses as much as digits as its factorization.

106866621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69470 (or 69461 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 36.

The square root of 106866621 is about 10337.6313050911. The cubic root of 106866621 is about 474.5485957166.

The spelling of 106866621 in words is "one hundred six million, eight hundred sixty-six thousand, six hundred twenty-one".