611867 has 4 divisors (see below), whose sum is σ = 613440. Its totient is φ = 610296.

The previous prime is 611839. The next prime is 611873. The reversal of 611867 is 768116.

611867 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 611867 - 2⁶ = 611803 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (611827) 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, 278 + ... + 1140.

It is an arithmetic number, because the mean of its divisors is an integer number (153360).

2⁶¹¹⁸⁶⁷ is an apocalyptic number.

611867 is a deficient number, since it is larger than the sum of its proper divisors (1573).

611867 is an equidigital number, since it uses as much as digits as its factorization.

611867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1572.

The product of its digits is 2016, while the sum is 29.

The square root of 611867 is about 782.2192787192. The cubic root of 611867 is about 84.8956967449.

The spelling of 611867 in words is "six hundred eleven thousand, eight hundred sixty-seven".