2001662 has 16 divisors (see below), whose sum is σ = 3259872. Its totient is φ = 916320.

The previous prime is 2001653. The next prime is 2001673. The reversal of 2001662 is 2661002.

It is a self number, because there is not a number n which added to its sum of digits gives 2001662.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4112 + ... + 4572.

It is an arithmetic number, because the mean of its divisors is an integer number (203742).

2^2001662 is an apocalyptic number.

2001662 is a deficient number, since it is larger than the sum of its proper divisors (1258210).

2001662 is a wasteful number, since it uses less digits than its factorization.

2001662 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 643.

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 2001662 is about 1414.8010460839. The cubic root of 2001662 is about 126.0269951398.

Adding to 2001662 its reverse (2661002), we get a palindrome (4662664).

The spelling of 2001662 in words is "two million, one thousand, six hundred sixty-two".