2171086 has 8 divisors (see below), whose sum is σ = 3344760. Its totient is φ = 1056168.

The previous prime is 2171077. The next prime is 2171089. The reversal of 2171086 is 6801712.

2171086 = 224² + 225² + ... + 260².

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

It is a super-2 number, since 2×2171086² = 9427228838792, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2171086.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2171089) 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, 14596 + ... + 14743.

It is an arithmetic number, because the mean of its divisors is an integer number (418095).

2^2171086 is an apocalyptic number.

2171086 is a deficient number, since it is larger than the sum of its proper divisors (1173674).

2171086 is a wasteful number, since it uses less digits than its factorization.

2171086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29378.

The product of its (nonzero) digits is 672, while the sum is 25.

The square root of 2171086 is about 1473.4605525768. The cubic root of 2171086 is about 129.4868528665.

Adding to 2171086 its reverse (6801712), we get a palindrome (8972798).

The spelling of 2171086 in words is "two million, one hundred seventy-one thousand, eighty-six".