670691186447 has 2 divisors, whose sum is σ = 670691186448. Its totient is φ = 670691186446.

The previous prime is 670691186423. The next prime is 670691186647. The reversal of 670691186447 is 744681196076.

670691186447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 670691186447 - 2³⁰ = 669617444623 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670691186647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335345593223 + 335345593224.

It is an arithmetic number, because the mean of its divisors is an integer number (335345593224).

Almost surely, 2^670691186447 is an apocalyptic number.

670691186447 is a deficient number, since it is larger than the sum of its proper divisors (1).

670691186447 is an equidigital number, since it uses as much as digits as its factorization.

670691186447 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12192768, while the sum is 59.

The spelling of 670691186447 in words is "six hundred seventy billion, six hundred ninety-one million, one hundred eighty-six thousand, four hundred forty-seven".