2001670001 has 8 divisors (see below), whose sum is σ = 2029988424. Its totient is φ = 1973376000.

The previous prime is 2001669997. The next prime is 2001670009. The reversal of 2001670001 is 1000761002.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 21864976 + 1979805025 = 4676^2 + 44495^2 .

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 2001670001 - 2² = 2001669997 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2001670009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 214505 + ... + 223641.

It is an arithmetic number, because the mean of its divisors is an integer number (253748553).

Almost surely, 2^2001670001 is an apocalyptic number.

It is an amenable number.

2001670001 is a deficient number, since it is larger than the sum of its proper divisors (28318423).

2001670001 is an equidigital number, since it uses as much as digits as its factorization.

2001670001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12211.

The product of its (nonzero) digits is 84, while the sum is 17.

The square root of 2001670001 is about 44740.0268328038. The cubic root of 2001670001 is about 1260.2716305702.

The spelling of 2001670001 in words is "two billion, one million, six hundred seventy thousand, one".