2001673 has 2 divisors, whose sum is σ = 2001674. Its totient is φ = 2001672.

The previous prime is 2001653. The next prime is 2001677. The reversal of 2001673 is 3761002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1937664 + 64009 = 1392^2 + 253^2 .

It is a cyclic number.

It is not a de Polignac number, because 2001673 - 2⁵ = 2001641 is a prime.

It is equal to p₁₄₉₀₅₀ and since 2001673 and 149050 have the same sum of digits, it is a Honaker prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2001673.

It is not a weakly prime, because it can be changed into another prime (2001677) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000836 + 1000837.

It is an arithmetic number, because the mean of its divisors is an integer number (1000837).

2^2001673 is an apocalyptic number.

It is an amenable number.

2001673 is a deficient number, since it is larger than the sum of its proper divisors (1).

2001673 is an equidigital number, since it uses as much as digits as its factorization.

2001673 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 252, while the sum is 19.

The square root of 2001673 is about 1414.8049335509. The cubic root of 2001673 is about 126.0272259970.

Adding to 2001673 its reverse (3761002), we get a palindrome (5762675).

The spelling of 2001673 in words is "two million, one thousand, six hundred seventy-three".