611447 has 4 divisors (see below), whose sum is σ = 613056. Its totient is φ = 609840.

The previous prime is 611441. The next prime is 611449. The reversal of 611447 is 744116.

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 611447 - 2¹⁶ = 545911 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611441) 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 in 3 ways as a sum of consecutive naturals, for example, 122 + ... + 1112.

It is an arithmetic number, because the mean of its divisors is an integer number (153264).

2⁶¹¹⁴⁴⁷ is an apocalyptic number.

611447 is a deficient number, since it is larger than the sum of its proper divisors (1609).

611447 is an equidigital number, since it uses as much as digits as its factorization.

611447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1608.

The product of its digits is 672, while the sum is 23.

The square root of 611447 is about 781.9507657135. The cubic root of 611447 is about 84.8762674931.

The spelling of 611447 in words is "six hundred eleven thousand, four hundred forty-seven".