1606068637 has 2 divisors, whose sum is σ = 1606068638. Its totient is φ = 1606068636.

The previous prime is 1606068623. The next prime is 1606068641. The reversal of 1606068637 is 7368606061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1234889881 + 371178756 = 35141^2 + 19266^2 .

It is a cyclic number.

It is not a de Polignac number, because 1606068637 - 2¹¹ = 1606066589 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1606068593 and 1606068602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1606068647) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 803034318 + 803034319.

It is an arithmetic number, because the mean of its divisors is an integer number (803034319).

Almost surely, 2^1606068637 is an apocalyptic number.

It is an amenable number.

1606068637 is a deficient number, since it is larger than the sum of its proper divisors (1).

1606068637 is an equidigital number, since it uses as much as digits as its factorization.

1606068637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 217728, while the sum is 43.

The square root of 1606068637 is about 40075.7861682089. The cubic root of 1606068637 is about 1171.0839631724.

The spelling of 1606068637 in words is "one billion, six hundred six million, sixty-eight thousand, six hundred thirty-seven".