611951 has 2 divisors, whose sum is σ = 611952. Its totient is φ = 611950.

The previous prime is 611939. The next prime is 611953. The reversal of 611951 is 159116.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 611951 - 2⁶ = 611887 is a prime.

Together with 611953, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (611953) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305975 + 305976.

It is an arithmetic number, because the mean of its divisors is an integer number (305976).

2⁶¹¹⁹⁵¹ is an apocalyptic number.

611951 is a deficient number, since it is larger than the sum of its proper divisors (1).

611951 is an equidigital number, since it uses as much as digits as its factorization.

611951 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 23.

The square root of 611951 is about 782.2729702604. The cubic root of 611951 is about 84.8995815283.

The spelling of 611951 in words is "six hundred eleven thousand, nine hundred fifty-one".