511967 has 4 divisors (see below), whose sum is σ = 524496. Its totient is φ = 499440.

The previous prime is 511963. The next prime is 511991. The reversal of 511967 is 769115.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 511967 - 2² = 511963 is a prime.

It is a super-2 number, since 2×511967² = 524220418178, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (511961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6203 + ... + 6284.

It is an arithmetic number, because the mean of its divisors is an integer number (131124).

2⁵¹¹⁹⁶⁷ is an apocalyptic number.

511967 is a deficient number, since it is larger than the sum of its proper divisors (12529).

511967 is a wasteful number, since it uses less digits than its factorization.

511967 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12528.

The product of its digits is 1890, while the sum is 29.

The square root of 511967 is about 715.5186929773. The cubic root of 511967 is about 79.9982812131.

The spelling of 511967 in words is "five hundred eleven thousand, nine hundred sixty-seven".