106863661 has 2 divisors, whose sum is σ = 106863662. Its totient is φ = 106863660.

The previous prime is 106863629. The next prime is 106863697. The reversal of 106863661 is 166368601.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81108036 + 25755625 = 9006^2 + 5075^2 .

It is a cyclic number.

It is not a de Polignac number, because 106863661 - 2⁵ = 106863629 is a prime.

It is a super-2 number, since 2×106863661² = 22839684084645842, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 106863661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106803661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53431830 + 53431831.

It is an arithmetic number, because the mean of its divisors is an integer number (53431831).

Almost surely, 2^106863661 is an apocalyptic number.

It is an amenable number.

106863661 is a deficient number, since it is larger than the sum of its proper divisors (1).

106863661 is an equidigital number, since it uses as much as digits as its factorization.

106863661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 37.

The square root of 106863661 is about 10337.4881378408. The cubic root of 106863661 is about 474.5442143148.

The spelling of 106863661 in words is "one hundred six million, eight hundred sixty-three thousand, six hundred sixty-one".