7705961605 has 8 divisors (see below), whose sum is σ = 9250681752. Its totient is φ = 6162417408.

The previous prime is 7705961573. The next prime is 7705961623. The reversal of 7705961605 is 5061695077.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 783888004 + 6922073601 = 27998^2 + 83199^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 7705961605 - 2⁵ = 7705961573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 in 7 ways as a sum of consecutive naturals, for example, 279504 + ... + 305833.

It is an arithmetic number, because the mean of its divisors is an integer number (1156335219).

Almost surely, 2^7705961605 is an apocalyptic number.

It is an amenable number.

7705961605 is a deficient number, since it is larger than the sum of its proper divisors (1544720147).

7705961605 is a wasteful number, since it uses less digits than its factorization.

7705961605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 587975.

The product of its (nonzero) digits is 396900, while the sum is 46.

The square root of 7705961605 is about 87783.6066985175. The cubic root of 7705961605 is about 1975.1903126974.

The spelling of 7705961605 in words is "seven billion, seven hundred five million, nine hundred sixty-one thousand, six hundred five".