106621706 has 4 divisors (see below), whose sum is σ = 159932562. Its totient is φ = 53310852.

The previous prime is 106621703. The next prime is 106621747. The reversal of 106621706 is 607126601.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 607126601 = 14431 ⋅42071.

It can be written as a sum of positive squares in only one way, i.e., 90421081 + 16200625 = 9509^2 + 4025^2 .

It is a super-2 number, since 2×106621706² = 22736376380700872, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (106621703) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26655425 + ... + 26655428.

Almost surely, 2^106621706 is an apocalyptic number.

106621706 is a deficient number, since it is larger than the sum of its proper divisors (53310856).

106621706 is an equidigital number, since it uses as much as digits as its factorization.

106621706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53310855.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 106621706 is about 10325.7787115549. The cubic root of 106621706 is about 474.1857977784.

The spelling of 106621706 in words is "one hundred six million, six hundred twenty-one thousand, seven hundred six".