611678 has 4 divisors (see below), whose sum is σ = 917520. Its totient is φ = 305838.

The previous prime is 611671. The next prime is 611693. The reversal of 611678 is 876116.

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

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 611678.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611671) 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 as a sum of consecutive naturals, namely, 152918 + ... + 152921.

It is an arithmetic number, because the mean of its divisors is an integer number (229380).

2⁶¹¹⁶⁷⁸ is an apocalyptic number.

611678 is a deficient number, since it is larger than the sum of its proper divisors (305842).

611678 is a wasteful number, since it uses less digits than its factorization.

611678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 305841.

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

The square root of 611678 is about 782.0984592748. The cubic root of 611678 is about 84.8869546822.

The spelling of 611678 in words is "six hundred eleven thousand, six hundred seventy-eight".