106644289 has 2 divisors, whose sum is σ = 106644290. Its totient is φ = 106644288.

The previous prime is 106644259. The next prime is 106644301. The reversal of 106644289 is 982446601.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57532225 + 49112064 = 7585^2 + 7008^2 .

It is a cyclic number.

It is not a de Polignac number, because 106644289 - 2¹³ = 106636097 is a prime.

It is a super-2 number, since 2×106644289² = 22746008752631042, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (106644259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53322144 + 53322145.

It is an arithmetic number, because the mean of its divisors is an integer number (53322145).

Almost surely, 2^106644289 is an apocalyptic number.

It is an amenable number.

106644289 is a deficient number, since it is larger than the sum of its proper divisors (1).

106644289 is an equidigital number, since it uses as much as digits as its factorization.

106644289 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 106644289 is about 10326.8721789320. The cubic root of 106644289 is about 474.2192737072.

The spelling of 106644289 in words is "one hundred six million, six hundred forty-four thousand, two hundred eighty-nine".