7734073661 has 2 divisors, whose sum is σ = 7734073662. Its totient is φ = 7734073660.

The previous prime is 7734073603. The next prime is 7734073717. The reversal of 7734073661 is 1663704377.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3869586436 + 3864487225 = 62206^2 + 62165^2 .

It is an emirp because it is prime and its reverse (1663704377) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7734073661 - 2¹⁰ = 7734072637 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7734073261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3867036830 + 3867036831.

It is an arithmetic number, because the mean of its divisors is an integer number (3867036831).

Almost surely, 2^7734073661 is an apocalyptic number.

It is an amenable number.

7734073661 is a deficient number, since it is larger than the sum of its proper divisors (1).

7734073661 is an equidigital number, since it uses as much as digits as its factorization.

7734073661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 444528, while the sum is 44.

The square root of 7734073661 is about 87943.5822615840. The cubic root of 7734073661 is about 1977.5892897458.

The spelling of 7734073661 in words is "seven billion, seven hundred thirty-four million, seventy-three thousand, six hundred sixty-one".