4347625661 has 2 divisors, whose sum is σ = 4347625662. Its totient is φ = 4347625660.

The previous prime is 4347625637. The next prime is 4347625687. The reversal of 4347625661 is 1665267434.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2696828761 + 1650796900 = 51931^2 + 40630^2 .

It is a cyclic number.

It is not a de Polignac number, because 4347625661 - 2¹⁰ = 4347624637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4347625621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2173812830 + 2173812831.

It is an arithmetic number, because the mean of its divisors is an integer number (2173812831).

Almost surely, 2^4347625661 is an apocalyptic number.

It is an amenable number.

4347625661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4347625661 is an equidigital number, since it uses as much as digits as its factorization.

4347625661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 44.

The square root of 4347625661 is about 65936.5275169993. The cubic root of 4347625661 is about 1632.1148432025.

The spelling of 4347625661 in words is "four billion, three hundred forty-seven million, six hundred twenty-five thousand, six hundred sixty-one".