355669 has 2 divisors, whose sum is σ = 355670. Its totient is φ = 355668.

The previous prime is 355651. The next prime is 355679. The reversal of 355669 is 966553.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 348100 + 7569 = 590^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 355669 - 2⁷ = 355541 is a prime.

It is a super-2 number, since 2×355669² = 253000875122, which contains 22 as substring.

355669 is a lucky number.

It is a plaindrome in base 10.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (355609) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 177834 + 177835.

It is an arithmetic number, because the mean of its divisors is an integer number (177835).

2³⁵⁵⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

355669 is a deficient number, since it is larger than the sum of its proper divisors (1).

355669 is an equidigital number, since it uses as much as digits as its factorization.

355669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 24300, while the sum is 34.

The square root of 355669 is about 596.3799124719. The cubic root of 355669 is about 70.8514383554.

It can be divided in two parts, 355 and 669, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 355669 in words is "three hundred fifty-five thousand, six hundred sixty-nine".