2001670 has 32 divisors (see below), whose sum is σ = 4064256. Its totient is φ = 703200.

The previous prime is 2001653. The next prime is 2001673. The reversal of 2001670 is 761002.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001673) 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, 3117 + ... + 3703.

It is an arithmetic number, because the mean of its divisors is an integer number (127008).

2^2001670 is an apocalyptic number.

2001670 is an abundant number, since it is smaller than the sum of its proper divisors (2062586).

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

2001670 is a wasteful number, since it uses less digits than its factorization.

2001670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636.

The product of its (nonzero) digits is 84, while the sum is 16.

The square root of 2001670 is about 1414.8038733337. The cubic root of 2001670 is about 126.0271630360.

Adding to 2001670 its reverse (761002), we get a palindrome (2762672).

The spelling of 2001670 in words is "two million, one thousand, six hundred seventy".