676335070066021 has 2 divisors, whose sum is σ = 676335070066022. Its totient is φ = 676335070066020.

The previous prime is 676335070066013. The next prime is 676335070066049. The reversal of 676335070066021 is 120660070533676.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 594311798577121 + 82023271488900 = 24378511^2 + 9056670^2 .

It is a cyclic number.

It is not a de Polignac number, because 676335070066021 - 2³ = 676335070066013 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 676335070066021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (676335070066081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 338167535033010 + 338167535033011.

It is an arithmetic number, because the mean of its divisors is an integer number (338167535033011).

Almost surely, 2^{676335070066021} is an apocalyptic number.

It is an amenable number.

676335070066021 is a deficient number, since it is larger than the sum of its proper divisors (1).

676335070066021 is an equidigital number, since it uses as much as digits as its factorization.

676335070066021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5715360, while the sum is 52.

The spelling of 676335070066021 in words is "six hundred seventy-six trillion, three hundred thirty-five billion, seventy million, sixty-six thousand, twenty-one".