611967 has 4 divisors (see below), whose sum is σ = 815960. Its totient is φ = 407976.

The previous prime is 611957. The next prime is 611969. The reversal of 611967 is 769116.

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

It is not a de Polignac number, because 611967 - 2⁴ = 611951 is a prime.

It is a D-number.

It is a Duffinian number.

611967 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611969) 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 in 3 ways as a sum of consecutive naturals, for example, 101992 + ... + 101997.

It is an arithmetic number, because the mean of its divisors is an integer number (203990).

2⁶¹¹⁹⁶⁷ is an apocalyptic number.

611967 is a deficient number, since it is larger than the sum of its proper divisors (203993).

611967 is a wasteful number, since it uses less digits than its factorization.

611967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203992.

The product of its digits is 2268, while the sum is 30.

The square root of 611967 is about 782.2831968028. The cubic root of 611967 is about 84.9003214467.

The spelling of 611967 in words is "six hundred eleven thousand, nine hundred sixty-seven".