106289665 has 4 divisors (see below), whose sum is σ = 127547604. Its totient is φ = 85031728.

The previous prime is 106289657. The next prime is 106289683. The reversal of 106289665 is 566982601.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 61653904 + 44635761 = 7852^2 + 6681^2 .

It is a cyclic number.

It is not a de Polignac number, because 106289665 - 2³ = 106289657 is a prime.

It is a super-2 number, since 2×106289665² = 22594985771624450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10628962 + ... + 10628971.

It is an arithmetic number, because the mean of its divisors is an integer number (31886901).

Almost surely, 2^106289665 is an apocalyptic number.

It is an amenable number.

106289665 is a deficient number, since it is larger than the sum of its proper divisors (21257939).

106289665 is an equidigital number, since it uses as much as digits as its factorization.

106289665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21257938.

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 106289665 is about 10309.6879196220. The cubic root of 106289665 is about 473.6930499184.

It can be divided in two parts, 1062896 and 65, that added together give a square (1062961 = 1031²).

The spelling of 106289665 in words is "one hundred six million, two hundred eighty-nine thousand, six hundred sixty-five".