670670347 has 2 divisors, whose sum is σ = 670670348. Its totient is φ = 670670346.

The previous prime is 670670323. The next prime is 670670353. The reversal of 670670347 is 743076076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670670347 - 2¹⁵ = 670637579 is a prime.

It is not a weakly prime, because it can be changed into another prime (670670387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335335173 + 335335174.

It is an arithmetic number, because the mean of its divisors is an integer number (335335174).

Almost surely, 2^670670347 is an apocalyptic number.

670670347 is a deficient number, since it is larger than the sum of its proper divisors (1).

670670347 is an equidigital number, since it uses as much as digits as its factorization.

670670347 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 148176, while the sum is 40.

The square root of 670670347 is about 25897.3038558071. The cubic root of 670670347 is about 875.3257440778.

The spelling of 670670347 in words is "six hundred seventy million, six hundred seventy thousand, three hundred forty-seven".