4661256617 has 2 divisors, whose sum is σ = 4661256618. Its totient is φ = 4661256616.

The previous prime is 4661256583. The next prime is 4661256637. The reversal of 4661256617 is 7166521664.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3664970521 + 996286096 = 60539^2 + 31564^2 .

It is a cyclic number.

It is not a de Polignac number, because 4661256617 - 2¹² = 4661252521 is a prime.

It is not a weakly prime, because it can be changed into another prime (4661256637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2330628308 + 2330628309.

It is an arithmetic number, because the mean of its divisors is an integer number (2330628309).

Almost surely, 2^4661256617 is an apocalyptic number.

It is an amenable number.

4661256617 is a deficient number, since it is larger than the sum of its proper divisors (1).

4661256617 is an equidigital number, since it uses as much as digits as its factorization.

4661256617 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 44.

The square root of 4661256617 is about 68273.3961144456. The cubic root of 4661256617 is about 1670.4532955010.

The spelling of 4661256617 in words is "four billion, six hundred sixty-one million, two hundred fifty-six thousand, six hundred seventeen".