5671645807 has 2 divisors, whose sum is σ = 5671645808. Its totient is φ = 5671645806.

The previous prime is 5671645789. The next prime is 5671645841. The reversal of 5671645807 is 7085461765.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 5671645807 - 2¹¹ = 5671643759 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5671645897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2835822903 + 2835822904.

It is an arithmetic number, because the mean of its divisors is an integer number (2835822904).

Almost surely, 2^5671645807 is an apocalyptic number.

5671645807 is a deficient number, since it is larger than the sum of its proper divisors (1).

5671645807 is an equidigital number, since it uses as much as digits as its factorization.

5671645807 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1411200, while the sum is 49.

The square root of 5671645807 is about 75310.3300152111. The cubic root of 5671645807 is about 1783.3491008553.

The spelling of 5671645807 in words is "five billion, six hundred seventy-one million, six hundred forty-five thousand, eight hundred seven".