4020705671 has 4 divisors (see below), whose sum is σ = 4069147992. Its totient is φ = 3972263352.

The previous prime is 4020705659. The next prime is 4020705679. The reversal of 4020705671 is 1765070204.

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

It is a cyclic number.

It is not a de Polignac number, because 4020705671 - 2¹⁴ = 4020689287 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 (4020705679) 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 3 ways as a sum of consecutive naturals, for example, 24221036 + ... + 24221201.

It is an arithmetic number, because the mean of its divisors is an integer number (1017286998).

Almost surely, 2^4020705671 is an apocalyptic number.

4020705671 is a deficient number, since it is larger than the sum of its proper divisors (48442321).

4020705671 is an equidigital number, since it uses as much as digits as its factorization.

4020705671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48442320.

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 4020705671 is about 63409.0346165276. The cubic root of 4020705671 is about 1590.1353564079.

Adding to 4020705671 its reverse (1765070204), we get a palindrome (5785775875).

The spelling of 4020705671 in words is "four billion, twenty million, seven hundred five thousand, six hundred seventy-one".