511669 has 2 divisors, whose sum is σ = 511670. Its totient is φ = 511668.

The previous prime is 511633. The next prime is 511691. The reversal of 511669 is 966115.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 504100 + 7569 = 710^2 + 87^2 .

It is a cyclic number.

It is not a de Polignac number, because 511669 - 2⁷ = 511541 is a prime.

It is a super-2 number, since 2×511669² = 523610331122, which contains 22 as substring.

It is a Chen prime.

511669 is a lucky number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (511169) 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, 255834 + 255835.

It is an arithmetic number, because the mean of its divisors is an integer number (255835).

2⁵¹¹⁶⁶⁹ is an apocalyptic number.

It is an amenable number.

511669 is a deficient number, since it is larger than the sum of its proper divisors (1).

511669 is an equidigital number, since it uses as much as digits as its factorization.

511669 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1620, while the sum is 28.

The square root of 511669 is about 715.3104221245. The cubic root of 511669 is about 79.9827567003.

The spelling of 511669 in words is "five hundred eleven thousand, six hundred sixty-nine".