2106015 has 8 divisors (see below), whose sum is σ = 3369648. Its totient is φ = 1123200.

The previous prime is 2105993. The next prime is 2106019. The reversal of 2106015 is 5106012.

2106015 = 647² + 648² + ... + 651².

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

It is not a de Polignac number, because 2106015 - 2⁸ = 2105759 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (15), and also a Moran number because the ratio is a prime number: 140401 = 2106015 / (2 + 1 + 0 + 6 + 0 + 1 + 5).

It is a junction number, because it is equal to n+sod(n) for n = 2105985 and 2106003.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2106019) 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, 70186 + ... + 70215.

It is an arithmetic number, because the mean of its divisors is an integer number (421206).

2^2106015 is an apocalyptic number.

2106015 is a deficient number, since it is larger than the sum of its proper divisors (1263633).

2106015 is a wasteful number, since it uses less digits than its factorization.

2106015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140409.

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

The square root of 2106015 is about 1451.2115627985. The cubic root of 2106015 is about 128.1800647706.

The spelling of 2106015 in words is "two million, one hundred six thousand, fifteen".