106620661 has 16 divisors (see below), whose sum is σ = 124504704. Its totient is φ = 89420544.

The previous prime is 106620601. The next prime is 106620667. The reversal of 106620661 is 166026601.

It is a cyclic number.

It is not a de Polignac number, because 106620661 - 2⁹ = 106620149 is a prime.

It is a super-2 number, since 2×106620661² = 22735930704153842, 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 (106620667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69246 + ... + 70768.

It is an arithmetic number, because the mean of its divisors is an integer number (7781544).

Almost surely, 2^106620661 is an apocalyptic number.

It is an amenable number.

106620661 is a deficient number, since it is larger than the sum of its proper divisors (17884043).

106620661 is a wasteful number, since it uses less digits than its factorization.

106620661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740.

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 106620661 is about 10325.7281099204. The cubic root of 106620661 is about 474.1842486074.

The spelling of 106620661 in words is "one hundred six million, six hundred twenty thousand, six hundred sixty-one".