610391 has 2 divisors, whose sum is σ = 610392. Its totient is φ = 610390.

The previous prime is 610339. The next prime is 610409. The reversal of 610391 is 193016.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 610391 - 2⁶ = 610327 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (610301) 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, 305195 + 305196.

It is an arithmetic number, because the mean of its divisors is an integer number (305196).

2⁶¹⁰³⁹¹ is an apocalyptic number.

610391 is a deficient number, since it is larger than the sum of its proper divisors (1).

610391 is an equidigital number, since it uses as much as digits as its factorization.

610391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 20.

The square root of 610391 is about 781.2752395923. The cubic root of 610391 is about 84.8273774633.

It can be divided in two parts, 610 and 391, that added together give a palindrome (1001).

The spelling of 610391 in words is "six hundred ten thousand, three hundred ninety-one".