610666513 has 2 divisors, whose sum is σ = 610666514. Its totient is φ = 610666512.

The previous prime is 610666493. The next prime is 610666519. The reversal of 610666513 is 315666016.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 347188689 + 263477824 = 18633^2 + 16232^2 .

It is a cyclic number.

It is not a de Polignac number, because 610666513 - 2¹⁷ = 610535441 is a prime.

It is not a weakly prime, because it can be changed into another prime (610666519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 305333256 + 305333257.

It is an arithmetic number, because the mean of its divisors is an integer number (305333257).

Almost surely, 2^610666513 is an apocalyptic number.

It is an amenable number.

610666513 is a deficient number, since it is larger than the sum of its proper divisors (1).

610666513 is an equidigital number, since it uses as much as digits as its factorization.

610666513 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 610666513 is about 24711.6675479418. The cubic root of 610666513 is about 848.4013842565.

The spelling of 610666513 in words is "six hundred ten million, six hundred sixty-six thousand, five hundred thirteen".