6650161605 has 12 divisors (see below), whose sum is σ = 11526946860. Its totient is φ = 3546752832.

The previous prime is 6650161561. The next prime is 6650161621. The reversal of 6650161605 is 5061610566.

It can be written as a sum of positive squares in 2 ways, for example, as 2794496769 + 3855664836 = 52863^2 + 62094^2 .

It is not a de Polignac number, because 6650161605 - 2¹³ = 6650153413 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6650161605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 73890640 + ... + 73890729.

It is an arithmetic number, because the mean of its divisors is an integer number (960578905).

Almost surely, 2^6650161605 is an apocalyptic number.

It is an amenable number.

6650161605 is a deficient number, since it is larger than the sum of its proper divisors (4876785255).

6650161605 is a wasteful number, since it uses less digits than its factorization.

6650161605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147781380 (or 147781377 counting only the distinct ones).

The product of its (nonzero) digits is 32400, while the sum is 36.

The square root of 6650161605 is about 81548.5230093102. The cubic root of 6650161605 is about 1880.5175884561.

The spelling of 6650161605 in words is "six billion, six hundred fifty million, one hundred sixty-one thousand, six hundred five".