6610031609 has 2 divisors, whose sum is σ = 6610031610. Its totient is φ = 6610031608.

The previous prime is 6610031599. The next prime is 6610031621. The reversal of 6610031609 is 9061300166.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5285290000 + 1324741609 = 72700^2 + 36397^2 .

It is a cyclic number.

It is not a de Polignac number, because 6610031609 - 2¹² = 6610027513 is a prime.

It is not a weakly prime, because it can be changed into another prime (6610031669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3305015804 + 3305015805.

It is an arithmetic number, because the mean of its divisors is an integer number (3305015805).

Almost surely, 2^6610031609 is an apocalyptic number.

It is an amenable number.

6610031609 is a deficient number, since it is larger than the sum of its proper divisors (1).

6610031609 is an equidigital number, since it uses as much as digits as its factorization.

6610031609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 6610031609 is about 81302.1008892144. The cubic root of 6610031609 is about 1876.7273311465.

The spelling of 6610031609 in words is "six billion, six hundred ten million, thirty-one thousand, six hundred nine".