7665713563 has 4 divisors (see below), whose sum is σ = 7666183360. Its totient is φ = 7665243768.

The previous prime is 7665713551. The next prime is 7665713617. The reversal of 7665713563 is 3653175667.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7665713563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7665716563) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 209508 + ... + 243361.

It is an arithmetic number, because the mean of its divisors is an integer number (1916545840).

Almost surely, 2^7665713563 is an apocalyptic number.

7665713563 is a deficient number, since it is larger than the sum of its proper divisors (469797).

7665713563 is a wasteful number, since it uses less digits than its factorization.

7665713563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 469796.

The product of its digits is 2381400, while the sum is 49.

The square root of 7665713563 is about 87554.0608024551. The cubic root of 7665713563 is about 1971.7455187270.

The spelling of 7665713563 in words is "seven billion, six hundred sixty-five million, seven hundred thirteen thousand, five hundred sixty-three".