610658261 has 2 divisors, whose sum is σ = 610658262. Its totient is φ = 610658260.

The previous prime is 610658227. The next prime is 610658297. The reversal of 610658261 is 162856016.

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., 603635761 + 7022500 = 24569^2 + 2650^2 .

It is a cyclic number.

It is not a de Polignac number, because 610658261 - 2¹⁴ = 610641877 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (610658761) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305329130 + 305329131.

It is an arithmetic number, because the mean of its divisors is an integer number (305329131).

Almost surely, 2^610658261 is an apocalyptic number.

It is an amenable number.

610658261 is a deficient number, since it is larger than the sum of its proper divisors (1).

610658261 is an equidigital number, since it uses as much as digits as its factorization.

610658261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 610658261 is about 24711.5005817130. The cubic root of 610658261 is about 848.3975627273.

The spelling of 610658261 in words is "six hundred ten million, six hundred fifty-eight thousand, two hundred sixty-one".