106168681 has 6 divisors (see below), whose sum is σ = 109956782. Its totient is φ = 102506880.

The previous prime is 106168679. The next prime is 106168693. The reversal of 106168681 is 186861601.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2128681 + 104040000 = 1459^2 + 10200^2 .

It is not a de Polignac number, because 106168681 - 2¹ = 106168679 is a prime.

It is a super-2 number, since 2×106168681² = 22543577650559522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 106168681.

It is not an unprimeable number, because it can be changed into a prime (106168631) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 62280 + ... + 63961.

Almost surely, 2^106168681 is an apocalyptic number.

It is an amenable number.

106168681 is a deficient number, since it is larger than the sum of its proper divisors (3788101).

106168681 is an equidigital number, since it uses as much as digits as its factorization.

106168681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 126299 (or 126270 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 106168681 is about 10303.8187581110. The cubic root of 106168681 is about 473.5132549598.

The spelling of 106168681 in words is "one hundred six million, one hundred sixty-eight thousand, six hundred eighty-one".