611693 has 2 divisors, whose sum is σ = 611694. Its totient is φ = 611692.

The previous prime is 611671. The next prime is 611707. The reversal of 611693 is 396116.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 611524 + 169 = 782^2 + 13^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-611693 is a prime.

It is an Ulam number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611603) 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, 305846 + 305847.

It is an arithmetic number, because the mean of its divisors is an integer number (305847).

2⁶¹¹⁶⁹³ is an apocalyptic number.

It is an amenable number.

611693 is a deficient number, since it is larger than the sum of its proper divisors (1).

611693 is an equidigital number, since it uses as much as digits as its factorization.

611693 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 972, while the sum is 26.

The square root of 611693 is about 782.1080488014. The cubic root of 611693 is about 84.8876485625.

The spelling of 611693 in words is "six hundred eleven thousand, six hundred ninety-three".