106378609 has 2 divisors, whose sum is σ = 106378610. Its totient is φ = 106378608.

The previous prime is 106378567. The next prime is 106378619. The reversal of 106378609 is 906873601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 76947984 + 29430625 = 8772^2 + 5425^2 .

It is a cyclic number.

It is not a de Polignac number, because 106378609 - 2²³ = 97990001 is a prime.

It is a super-2 number, since 2×106378609² = 22632816905549762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106378619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53189304 + 53189305.

It is an arithmetic number, because the mean of its divisors is an integer number (53189305).

Almost surely, 2^106378609 is an apocalyptic number.

It is an amenable number.

106378609 is a deficient number, since it is larger than the sum of its proper divisors (1).

106378609 is an equidigital number, since it uses as much as digits as its factorization.

106378609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54432, while the sum is 40.

The square root of 106378609 is about 10314.0006302113. Note that the first 3 decimals coincide. The cubic root of 106378609 is about 473.8251430620.

The spelling of 106378609 in words is "one hundred six million, three hundred seventy-eight thousand, six hundred nine".