2001684626 has 4 divisors (see below), whose sum is σ = 3002526942. Its totient is φ = 1000842312.

The previous prime is 2001684623. The next prime is 2001684647. The reversal of 2001684626 is 6264861002.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1791405625 + 210279001 = 42325^2 + 14501^2 .

It is not an unprimeable number, because it can be changed into a prime (2001684623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 500421155 + ... + 500421158.

Almost surely, 2^2001684626 is an apocalyptic number.

2001684626 is a deficient number, since it is larger than the sum of its proper divisors (1000842316).

2001684626 is a wasteful number, since it uses less digits than its factorization.

2001684626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1000842315.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 2001684626 is about 44740.1902767523. The cubic root of 2001684626 is about 1260.2746999119.

The spelling of 2001684626 in words is "two billion, one million, six hundred eighty-four thousand, six hundred twenty-six".