670370673647 has 2 divisors, whose sum is σ = 670370673648. Its totient is φ = 670370673646.

The previous prime is 670370673631. The next prime is 670370673691. The reversal of 670370673647 is 746376073076.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670370673647 - 2⁴ = 670370673631 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 670370673592 and 670370673601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670370673047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335185336823 + 335185336824.

It is an arithmetic number, because the mean of its divisors is an integer number (335185336824).

Almost surely, 2^670370673647 is an apocalyptic number.

670370673647 is a deficient number, since it is larger than the sum of its proper divisors (1).

670370673647 is an equidigital number, since it uses as much as digits as its factorization.

670370673647 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18670176, while the sum is 56.

The spelling of 670370673647 in words is "six hundred seventy billion, three hundred seventy million, six hundred seventy-three thousand, six hundred forty-seven".