346826628661 has 2 divisors, whose sum is σ = 346826628662. Its totient is φ = 346826628660.

The previous prime is 346826628619. The next prime is 346826628671. The reversal of 346826628661 is 166826628643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 319326708100 + 27499920561 = 565090^2 + 165831^2 .

It is a cyclic number.

It is not a de Polignac number, because 346826628661 - 2¹⁵ = 346826595893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 346826628596 and 346826628605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346826628601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173413314330 + 173413314331.

It is an arithmetic number, because the mean of its divisors is an integer number (173413314331).

Almost surely, 2^346826628661 is an apocalyptic number.

It is an amenable number.

346826628661 is a deficient number, since it is larger than the sum of its proper divisors (1).

346826628661 is an equidigital number, since it uses as much as digits as its factorization.

346826628661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23887872, while the sum is 58.

The spelling of 346826628661 in words is "three hundred forty-six billion, eight hundred twenty-six million, six hundred twenty-eight thousand, six hundred sixty-one".