106128817 has 4 divisors (see below), whose sum is σ = 106342000. Its totient is φ = 105915636.

The previous prime is 106128797. The next prime is 106128821. The reversal of 106128817 is 718821601.

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, and also an emirpimes, since its reverse is a distinct semiprime: 718821601 = 137 ⋅5246873.

It is a cyclic number.

It is not a de Polignac number, because 106128817 - 2¹⁵ = 106096049 is a prime.

It is a super-2 number, since 2×106128817² = 22526651595638978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (106128887) 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, 105843 + ... + 106840.

It is an arithmetic number, because the mean of its divisors is an integer number (26585500).

Almost surely, 2^106128817 is an apocalyptic number.

It is an amenable number.

106128817 is a deficient number, since it is larger than the sum of its proper divisors (213183).

106128817 is an equidigital number, since it uses as much as digits as its factorization.

106128817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 213182.

The product of its (nonzero) digits is 5376, while the sum is 34.

The square root of 106128817 is about 10301.8841480576. The cubic root of 106128817 is about 473.4539829434.

The spelling of 106128817 in words is "one hundred six million, one hundred twenty-eight thousand, eight hundred seventeen".