355342661 has 2 divisors, whose sum is σ = 355342662. Its totient is φ = 355342660.

The previous prime is 355342657. The next prime is 355342667. The reversal of 355342661 is 166243553.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 353665636 + 1677025 = 18806^2 + 1295^2 .

It is a cyclic number.

It is not a de Polignac number, because 355342661 - 2² = 355342657 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355342667) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177671330 + 177671331.

It is an arithmetic number, because the mean of its divisors is an integer number (177671331).

Almost surely, 2^355342661 is an apocalyptic number.

It is an amenable number.

355342661 is a deficient number, since it is larger than the sum of its proper divisors (1).

355342661 is an equidigital number, since it uses as much as digits as its factorization.

355342661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 64800, while the sum is 35.

The square root of 355342661 is about 18850.5347669502. The cubic root of 355342661 is about 708.2976215014.

The spelling of 355342661 in words is "three hundred fifty-five million, three hundred forty-two thousand, six hundred sixty-one".