670741425624661 has 2 divisors, whose sum is σ = 670741425624662. Its totient is φ = 670741425624660.

The previous prime is 670741425624629. The next prime is 670741425624773. The reversal of 670741425624661 is 166426524147076.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 669655046757636 + 1086378867025 = 25877694^2 + 1042295^2 .

It is a cyclic number.

It is not a de Polignac number, because 670741425624661 - 2⁵ = 670741425624629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 670741425624661.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670741425627661) 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, 335370712812330 + 335370712812331.

It is an arithmetic number, because the mean of its divisors is an integer number (335370712812331).

Almost surely, 2^{670741425624661} is an apocalyptic number.

It is an amenable number.

670741425624661 is a deficient number, since it is larger than the sum of its proper divisors (1).

670741425624661 is an equidigital number, since it uses as much as digits as its factorization.

670741425624661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81285120, while the sum is 61.

The spelling of 670741425624661 in words is "six hundred seventy trillion, seven hundred forty-one billion, four hundred twenty-five million, six hundred twenty-four thousand, six hundred sixty-one".