611957 has 2 divisors, whose sum is σ = 611958. Its totient is φ = 611956.

The previous prime is 611953. The next prime is 611969. The reversal of 611957 is 759116.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 481636 + 130321 = 694^2 + 361^2 .

It is a cyclic number.

It is not a de Polignac number, because 611957 - 2² = 611953 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611951) 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, 305978 + 305979.

It is an arithmetic number, because the mean of its divisors is an integer number (305979).

2⁶¹¹⁹⁵⁷ is an apocalyptic number.

It is an amenable number.

611957 is a deficient number, since it is larger than the sum of its proper divisors (1).

611957 is an equidigital number, since it uses as much as digits as its factorization.

611957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1890, while the sum is 29.

The square root of 611957 is about 782.2768052295. The cubic root of 611957 is about 84.8998589992.

The spelling of 611957 in words is "six hundred eleven thousand, nine hundred fifty-seven".