106668609 has 8 divisors (see below), whose sum is σ = 142414752. Its totient is φ = 71017440.

The previous prime is 106668607. The next prime is 106668619. The reversal of 106668609 is 906866601.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 106668609 - 2¹ = 106668607 is a prime.

It is a super-2 number, since 2×106668609² = 22756384291989762, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (106668607) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21079 + ... + 25644.

It is an arithmetic number, because the mean of its divisors is an integer number (17801844).

Almost surely, 2^106668609 is an apocalyptic number.

It is an amenable number.

106668609 is a deficient number, since it is larger than the sum of its proper divisors (35746143).

106668609 is an equidigital number, since it uses as much as digits as its factorization.

106668609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47487.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 106668609 is about 10328.0496222665. The cubic root of 106668609 is about 474.2553191947.

The spelling of 106668609 in words is "one hundred six million, six hundred sixty-eight thousand, six hundred nine".