2101670 has 16 divisors (see below), whose sum is σ = 3836160. Its totient is φ = 828864.

The previous prime is 2101669. The next prime is 2101681. The reversal of 2101670 is 761012.

It is a happy number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 710 + ... + 2169.

It is an arithmetic number, because the mean of its divisors is an integer number (239760).

2^2101670 is an apocalyptic number.

2101670 is a deficient number, since it is larger than the sum of its proper divisors (1734490).

2101670 is a wasteful number, since it uses less digits than its factorization.

2101670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2959.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 2101670 is about 1449.7137648515. The cubic root of 2101670 is about 128.0918530157.

Adding to 2101670 its reverse (761012), we get a palindrome (2862682).

The spelling of 2101670 in words is "two million, one hundred one thousand, six hundred seventy".