6609767077 has 2 divisors, whose sum is σ = 6609767078. Its totient is φ = 6609767076.

The previous prime is 6609767051. The next prime is 6609767119. The reversal of 6609767077 is 7707679066.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 4373044641 + 2236722436 = 66129^2 + 47294^2 .

It is a cyclic number.

It is not a de Polignac number, because 6609767077 - 2²⁷ = 6475549349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6609767477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3304883538 + 3304883539.

It is an arithmetic number, because the mean of its divisors is an integer number (3304883539).

Almost surely, 2^6609767077 is an apocalyptic number.

It is an amenable number.

6609767077 is a deficient number, since it is larger than the sum of its proper divisors (1).

6609767077 is an equidigital number, since it uses as much as digits as its factorization.

6609767077 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4667544, while the sum is 55.

The square root of 6609767077 is about 81300.4740269084. The cubic root of 6609767077 is about 1876.7022954086.

The spelling of 6609767077 in words is "six billion, six hundred nine million, seven hundred sixty-seven thousand, seventy-seven".