1671005005 has 16 divisors (see below), whose sum is σ = 2022876864. Its totient is φ = 1325076480.

The previous prime is 1671005003. The next prime is 1671005009. The reversal of 1671005005 is 5005001761.

It is not a de Polignac number, because 1671005005 - 2¹ = 1671005003 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1671005003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268054 + ... + 274216.

It is an arithmetic number, because the mean of its divisors is an integer number (126429804).

Almost surely, 2^1671005005 is an apocalyptic number.

It is an amenable number.

1671005005 is a deficient number, since it is larger than the sum of its proper divisors (351871859).

1671005005 is a wasteful number, since it uses less digits than its factorization.

1671005005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6636.

The product of its (nonzero) digits is 1050, while the sum is 25.

The square root of 1671005005 is about 40877.9280908414. The cubic root of 1671005005 is about 1186.6589439576.

Adding to 1671005005 its reverse (5005001761), we get a palindrome (6676006766).

The spelling of 1671005005 in words is "one billion, six hundred seventy-one million, five thousand, five".