2001654 has 24 divisors (see below), whose sum is σ = 4410432. Its totient is φ = 655920.

The previous prime is 2001653. The next prime is 2001673. The reversal of 2001654 is 4561002.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2001653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 187 + ... + 2009.

It is an arithmetic number, because the mean of its divisors is an integer number (183768).

2^2001654 is an apocalyptic number.

2001654 is an abundant number, since it is smaller than the sum of its proper divisors (2408778).

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

2001654 is a wasteful number, since it uses less digits than its factorization.

2001654 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1892 (or 1889 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 2001654 is about 1414.7982188284. The cubic root of 2001654 is about 126.0268272431.

Adding to 2001654 its reverse (4561002), we get a palindrome (6562656).

The spelling of 2001654 in words is "two million, one thousand, six hundred fifty-four".