7694447561 has 2 divisors, whose sum is σ = 7694447562. Its totient is φ = 7694447560.

The previous prime is 7694447539. The next prime is 7694447581. The reversal of 7694447561 is 1657444967.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4851958336 + 2842489225 = 69656^2 + 53315^2 .

It is a cyclic number.

It is not a de Polignac number, because 7694447561 - 2¹⁰ = 7694446537 is a prime.

It is not a weakly prime, because it can be changed into another prime (7694447581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3847223780 + 3847223781.

It is an arithmetic number, because the mean of its divisors is an integer number (3847223781).

Almost surely, 2^7694447561 is an apocalyptic number.

It is an amenable number.

7694447561 is a deficient number, since it is larger than the sum of its proper divisors (1).

7694447561 is an equidigital number, since it uses as much as digits as its factorization.

7694447561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5080320, while the sum is 53.

The square root of 7694447561 is about 87718.0002109031. Note that the first 3 decimals coincide. The cubic root of 7694447561 is about 1974.2060632815.

The spelling of 7694447561 in words is "seven billion, six hundred ninety-four million, four hundred forty-seven thousand, five hundred sixty-one".