2001687746 has 16 divisors (see below), whose sum is σ = 3317376384. Its totient is φ = 901015104.

The previous prime is 2001687719. The next prime is 2001687757. The reversal of 2001687746 is 6477861002.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1279070 + ... + 1280633.

It is an arithmetic number, because the mean of its divisors is an integer number (207336024).

Almost surely, 2^2001687746 is an apocalyptic number.

2001687746 is a deficient number, since it is larger than the sum of its proper divisors (1315688638).

2001687746 is a wasteful number, since it uses less digits than its factorization.

2001687746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2559745.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 2001687746 is about 44740.2251447174. The cubic root of 2001687746 is about 1260.2753547028.

The spelling of 2001687746 in words is "two billion, one million, six hundred eighty-seven thousand, seven hundred forty-six".