305069 has 2 divisors, whose sum is σ = 305070. Its totient is φ = 305068.

The previous prime is 305047. The next prime is 305093. The reversal of 305069 is 960503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289444 + 15625 = 538^2 + 125^2 .

It is a cyclic number.

It is not a de Polignac number, because 305069 - 2⁸ = 304813 is a prime.

It is a super-2 number, since 2×305069² = 186134189522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305029) 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, 152534 + 152535.

It is an arithmetic number, because the mean of its divisors is an integer number (152535).

2³⁰⁵⁰⁶⁹ is an apocalyptic number.

It is an amenable number.

305069 is a deficient number, since it is larger than the sum of its proper divisors (1).

305069 is an equidigital number, since it uses as much as digits as its factorization.

305069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 305069 is about 552.3305169914. The cubic root of 305069 is about 67.3182306639.

The spelling of 305069 in words is "three hundred five thousand, sixty-nine".