1656016717 has 2 divisors, whose sum is σ = 1656016718. Its totient is φ = 1656016716.

The previous prime is 1656016693. The next prime is 1656016729. The reversal of 1656016717 is 7176106561.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1005460681 + 650556036 = 31709^2 + 25506^2 .

It is a cyclic number.

It is not a de Polignac number, because 1656016717 - 2¹⁵ = 1655983949 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1656016717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1656016757) 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, 828008358 + 828008359.

It is an arithmetic number, because the mean of its divisors is an integer number (828008359).

Almost surely, 2^1656016717 is an apocalyptic number.

It is an amenable number.

1656016717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1656016717 is an equidigital number, since it uses as much as digits as its factorization.

1656016717 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52920, while the sum is 40.

The square root of 1656016717 is about 40694.1852971650. The cubic root of 1656016717 is about 1183.1003209697.

The spelling of 1656016717 in words is "one billion, six hundred fifty-six million, sixteen thousand, seven hundred seventeen".