106606506665 has 8 divisors (see below), whose sum is σ = 129680244168. Its totient is φ = 84116914560.

The previous prime is 106606506641. The next prime is 106606506679. The reversal of 106606506665 is 566605606601.

It can be written as a sum of positive squares in 4 ways, for example, as 25935169936 + 80671336729 = 161044^2 + 284027^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-106606506665 is a prime.

It is a super-2 number, since 2×106606506665² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 146035946 + ... + 146036675.

It is an arithmetic number, because the mean of its divisors is an integer number (16210030521).

Almost surely, 2^106606506665 is an apocalyptic number.

It is an amenable number.

106606506665 is a deficient number, since it is larger than the sum of its proper divisors (23073737503).

106606506665 is an equidigital number, since it uses as much as digits as its factorization.

106606506665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292072699.

The product of its (nonzero) digits is 1166400, while the sum is 47.

The spelling of 106606506665 in words is "one hundred six billion, six hundred six million, five hundred six thousand, six hundred sixty-five".