2171064 has 32 divisors (see below), whose sum is σ = 6203520. Its totient is φ = 620256.

The previous prime is 2171021. The next prime is 2171077. The reversal of 2171064 is 4601712.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 2171064.

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, 6294 + ... + 6629.

It is an arithmetic number, because the mean of its divisors is an integer number (193860).

2^2171064 is an apocalyptic number.

2171064 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

2171064 is an abundant number, since it is smaller than the sum of its proper divisors (4032456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2171064 is a wasteful number, since it uses less digits than its factorization.

2171064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12939 (or 12935 counting only the distinct ones).

The product of its (nonzero) digits is 336, while the sum is 21.

The square root of 2171064 is about 1473.4530871392. The cubic root of 2171064 is about 129.4864154939.

Adding to 2171064 its reverse (4601712), we get a palindrome (6772776).

The spelling of 2171064 in words is "two million, one hundred seventy-one thousand, sixty-four".