2001706651 has 8 divisors (see below), whose sum is σ = 2287936224. Its totient is φ = 1715544960.

The previous prime is 2001706579. The next prime is 2001706687. The reversal of 2001706651 is 1566071002.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2001706651 - 2¹³ = 2001698459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001706691) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 99891 + ... + 118243.

It is an arithmetic number, because the mean of its divisors is an integer number (285992028).

Almost surely, 2^2001706651 is an apocalyptic number.

2001706651 is a deficient number, since it is larger than the sum of its proper divisors (286229573).

2001706651 is a wasteful number, since it uses less digits than its factorization.

2001706651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33941.

The product of its (nonzero) digits is 2520, while the sum is 28.

The square root of 2001706651 is about 44740.4364194182. The cubic root of 2001706651 is about 1260.2793222598.

Adding to 2001706651 its reverse (1566071002), we get a palindrome (3567777653).

The spelling of 2001706651 in words is "two billion, one million, seven hundred six thousand, six hundred fifty-one".