106644609 has 6 divisors (see below), whose sum is σ = 154042226. Its totient is φ = 71096400.

The previous prime is 106644607. The next prime is 106644617. The reversal of 106644609 is 906446601.

106644609 is a `hidden beast` number, since 1 + 0 + 6 + 6 + 44 + 609 = 666.

It can be written as a sum of positive squares in only one way, i.e., 106193025 + 451584 = 10305^2 + 672^2 .

It is not a de Polignac number, because 106644609 - 2¹ = 106644607 is a prime.

It is a super-2 number, since 2×106644609² = 22746145257525762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106644607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 5924692 + ... + 5924709.

Almost surely, 2^106644609 is an apocalyptic number.

It is an amenable number.

106644609 is a deficient number, since it is larger than the sum of its proper divisors (47397617).

106644609 is a wasteful number, since it uses less digits than its factorization.

106644609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11849407 (or 11849404 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 106644609 is about 10326.8876724791. The cubic root of 106644609 is about 474.2197480255.

The spelling of 106644609 in words is "one hundred six million, six hundred forty-four thousand, six hundred nine".