106818644 has 6 divisors (see below), whose sum is σ = 186932634. Its totient is φ = 53409320.

The previous prime is 106818643. The next prime is 106818659. The reversal of 106818644 is 446818601.

It can be written as a sum of positive squares in only one way, i.e., 88585744 + 18232900 = 9412^2 + 4270^2 .

It is a super-2 number, since 2×106818644² = 22820445411997472, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 106818598 and 106818607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106818641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13352327 + ... + 13352334.

It is an arithmetic number, because the mean of its divisors is an integer number (31155439).

Almost surely, 2^106818644 is an apocalyptic number.

It is an amenable number.

106818644 is a deficient number, since it is larger than the sum of its proper divisors (80113990).

106818644 is a wasteful number, since it uses less digits than its factorization.

106818644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26704665 (or 26704663 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 106818644 is about 10335.3105420205. The cubic root of 106818644 is about 474.4775700284.

The spelling of 106818644 in words is "one hundred six million, eight hundred eighteen thousand, six hundred forty-four".