106178861 has 2 divisors, whose sum is σ = 106178862. Its totient is φ = 106178860.

The previous prime is 106178851. The next prime is 106178887. The reversal of 106178861 is 168871601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 54612100 + 51566761 = 7390^2 + 7181^2 .

It is a cyclic number.

It is not a de Polignac number, because 106178861 - 2¹⁰ = 106177837 is a prime.

It is a super-2 number, since 2×106178861² = 22547901046514642, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (106178851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53089430 + 53089431.

It is an arithmetic number, because the mean of its divisors is an integer number (53089431).

Almost surely, 2^106178861 is an apocalyptic number.

It is an amenable number.

106178861 is a deficient number, since it is larger than the sum of its proper divisors (1).

106178861 is an equidigital number, since it uses as much as digits as its factorization.

106178861 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16128, while the sum is 38.

The square root of 106178861 is about 10304.3127378783. The cubic root of 106178861 is about 473.5283887727.

The spelling of 106178861 in words is "one hundred six million, one hundred seventy-eight thousand, eight hundred sixty-one".