7663817065 has 4 divisors (see below), whose sum is σ = 9196580484. Its totient is φ = 6131053648.

The previous prime is 7663817059. The next prime is 7663817081. The reversal of 7663817065 is 5607183667.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5607183667 = 1453 ⋅3859039.

It can be written as a sum of positive squares in 2 ways, for example, as 2329413696 + 5334403369 = 48264^2 + 73037^2 .

It is a cyclic number.

It is not a de Polignac number, because 7663817065 - 2⁹ = 7663816553 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 766381702 + ... + 766381711.

It is an arithmetic number, because the mean of its divisors is an integer number (2299145121).

Almost surely, 2^7663817065 is an apocalyptic number.

It is an amenable number.

7663817065 is a deficient number, since it is larger than the sum of its proper divisors (1532763419).

7663817065 is a wasteful number, since it uses less digits than its factorization.

7663817065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1532763418.

The product of its (nonzero) digits is 1270080, while the sum is 49.

The square root of 7663817065 is about 87543.2296925353. The cubic root of 7663817065 is about 1971.5829019956.

The spelling of 7663817065 in words is "seven billion, six hundred sixty-three million, eight hundred seventeen thousand, sixty-five".