2031664 has 20 divisors (see below), whose sum is σ = 4029256. Its totient is φ = 991872.

The previous prime is 2031611. The next prime is 2031671. The reversal of 2031664 is 4661302.

It is a zygodrome in base 2.

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 3 ways as a sum of consecutive naturals, for example, 789 + ... + 2164.

2^2031664 is an apocalyptic number.

It is an amenable number.

2031664 is a deficient number, since it is larger than the sum of its proper divisors (1997592).

2031664 is a wasteful number, since it uses less digits than its factorization.

2031664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3004 (or 2998 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 2031664 is about 1425.3645147821. The cubic root of 2031664 is about 126.6535289544.

Adding to 2031664 its reverse (4661302), we get a palindrome (6692966).

It can be divided in two parts, 20 and 31664, that added together give a square (31684 = 178²).

The spelling of 2031664 in words is "two million, thirty-one thousand, six hundred sixty-four".