106786681 has 2 divisors, whose sum is σ = 106786682. Its totient is φ = 106786680.

The previous prime is 106786651. The next prime is 106786697. The reversal of 106786681 is 186687601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 102414400 + 4372281 = 10120^2 + 2091^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-106786681 is a prime.

It is a super-2 number, since 2×106786681² = 22806790477991522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106786651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53393340 + 53393341.

It is an arithmetic number, because the mean of its divisors is an integer number (53393341).

Almost surely, 2^106786681 is an apocalyptic number.

It is an amenable number.

106786681 is a deficient number, since it is larger than the sum of its proper divisors (1).

106786681 is an equidigital number, since it uses as much as digits as its factorization.

106786681 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 43.

The square root of 106786681 is about 10333.7641254288. The cubic root of 106786681 is about 474.4302398404.

The spelling of 106786681 in words is "one hundred six million, seven hundred eighty-six thousand, six hundred eighty-one".