106215 has 16 divisors (see below), whose sum is σ = 174048. Its totient is φ = 55296.

The previous prime is 106213. The next prime is 106217. The reversal of 106215 is 512601.

It is an interprime number because it is at equal distance from previous prime (106213) and next prime (106217).

It is not a de Polignac number, because 106215 - 2¹ = 106213 is a prime.

It is a super-2 number, since 2×106215² = 22563252450, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a junction number, because it is equal to n+sod(n) for n = 106194 and 106203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (106213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1047 + ... + 1143.

It is an arithmetic number, because the mean of its divisors is an integer number (10878).

2¹⁰⁶²¹⁵ is an apocalyptic number.

106215 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

106215 is a deficient number, since it is larger than the sum of its proper divisors (67833).

106215 is an equidigital number, since it uses as much as digits as its factorization.

106215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 106215 is about 325.9064282889. The cubic root of 106215 is about 47.3582105998.

Adding to 106215 its reverse (512601), we get a palindrome (618816).

The spelling of 106215 in words is "one hundred six thousand, two hundred fifteen".