1600648717 has 2 divisors, whose sum is σ = 1600648718. Its totient is φ = 1600648716.

The previous prime is 1600648669. The next prime is 1600648747. The reversal of 1600648717 is 7178460061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1542447076 + 58201641 = 39274^2 + 7629^2 .

It is a cyclic number.

It is not a de Polignac number, because 1600648717 - 2¹⁵ = 1600615949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1600648717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1600648747) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 800324358 + 800324359.

It is an arithmetic number, because the mean of its divisors is an integer number (800324359).

Almost surely, 2^1600648717 is an apocalyptic number.

It is an amenable number.

1600648717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1600648717 is an equidigital number, since it uses as much as digits as its factorization.

1600648717 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 1600648717 is about 40008.1081407257. The cubic root of 1600648717 is about 1169.7651455946.

The spelling of 1600648717 in words is "one billion, six hundred million, six hundred forty-eight thousand, seven hundred seventeen".