670247143 has 2 divisors, whose sum is σ = 670247144. Its totient is φ = 670247142.

The previous prime is 670247141. The next prime is 670247177. The reversal of 670247143 is 341742076.

It is an a-pointer prime, because the next prime (670247177) can be obtained adding 670247143 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670247143 - 2¹ = 670247141 is a prime.

Together with 670247141, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 670247099 and 670247108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670247141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335123571 + 335123572.

It is an arithmetic number, because the mean of its divisors is an integer number (335123572).

Almost surely, 2^670247143 is an apocalyptic number.

670247143 is a deficient number, since it is larger than the sum of its proper divisors (1).

670247143 is an equidigital number, since it uses as much as digits as its factorization.

670247143 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 28224, while the sum is 34.

The square root of 670247143 is about 25889.1317544641. The cubic root of 670247143 is about 875.1415903659.

The spelling of 670247143 in words is "six hundred seventy million, two hundred forty-seven thousand, one hundred forty-three".