670756626014221 has 2 divisors, whose sum is σ = 670756626014222. Its totient is φ = 670756626014220.

The previous prime is 670756626014107. The next prime is 670756626014231. The reversal of 670756626014221 is 122410626657076.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 647962828752996 + 22793797261225 = 25455114^2 + 4774285^2 .

It is a cyclic number.

It is not a de Polignac number, because 670756626014221 - 2³³ = 670748036079629 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670756626014231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335378313007110 + 335378313007111.

It is an arithmetic number, because the mean of its divisors is an integer number (335378313007111).

Almost surely, 2^{670756626014221} is an apocalyptic number.

It is an amenable number.

670756626014221 is a deficient number, since it is larger than the sum of its proper divisors (1).

670756626014221 is an equidigital number, since it uses as much as digits as its factorization.

670756626014221 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10160640, while the sum is 55.

The spelling of 670756626014221 in words is "six hundred seventy trillion, seven hundred fifty-six billion, six hundred twenty-six million, fourteen thousand, two hundred twenty-one".