106726661 has 2 divisors, whose sum is σ = 106726662. Its totient is φ = 106726660.

The previous prime is 106726639. The next prime is 106726679. The reversal of 106726661 is 166627601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 73017025 + 33709636 = 8545^2 + 5806^2 .

It is a cyclic number.

It is not a de Polignac number, because 106726661 - 2¹⁰ = 106725637 is a prime.

It is a super-2 number, since 2×106726661² = 22781160336417842, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106726621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53363330 + 53363331.

It is an arithmetic number, because the mean of its divisors is an integer number (53363331).

Almost surely, 2^106726661 is an apocalyptic number.

It is an amenable number.

106726661 is a deficient number, since it is larger than the sum of its proper divisors (1).

106726661 is an equidigital number, since it uses as much as digits as its factorization.

106726661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 106726661 is about 10330.8596447730. The cubic root of 106726661 is about 474.3413378685.

The spelling of 106726661 in words is "one hundred six million, seven hundred twenty-six thousand, six hundred sixty-one".