106658609 has 4 divisors (see below), whose sum is σ = 112272240. Its totient is φ = 101044980.

The previous prime is 106658593. The next prime is 106658623. The reversal of 106658609 is 906856601.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 106658609 - 2⁴ = 106658593 is a prime.

It is a super-2 number, since 2×106658609² = 22752117747629762, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106658639) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2806787 + ... + 2806824.

It is an arithmetic number, because the mean of its divisors is an integer number (28068060).

Almost surely, 2^106658609 is an apocalyptic number.

106658609 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

106658609 is a deficient number, since it is larger than the sum of its proper divisors (5613631).

106658609 is an equidigital number, since it uses as much as digits as its factorization.

106658609 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5613630.

The product of its (nonzero) digits is 77760, while the sum is 41.

The square root of 106658609 is about 10327.5654924091. The cubic root of 106658609 is about 474.2404985227.

The spelling of 106658609 in words is "one hundred six million, six hundred fifty-eight thousand, six hundred nine".