611966 has 16 divisors (see below), whose sum is σ = 997920. Its totient is φ = 280320.

The previous prime is 611957. The next prime is 611969. The reversal of 611966 is 669116.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (611969) by changing a digit.

611966 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1175 + ... + 1613.

It is an arithmetic number, because the mean of its divisors is an integer number (62370).

2⁶¹¹⁹⁶⁶ is an apocalyptic number.

611966 is a deficient number, since it is larger than the sum of its proper divisors (385954).

611966 is a wasteful number, since it uses less digits than its factorization.

611966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499.

The product of its digits is 1944, while the sum is 29.

The square root of 611966 is about 782.2825576478. The cubic root of 611966 is about 84.9002752022.

The spelling of 611966 in words is "six hundred eleven thousand, nine hundred sixty-six".