7665499505 has 16 divisors (see below), whose sum is σ = 9256349520. Its totient is φ = 6093975552.

The previous prime is 7665499489. The next prime is 7665499507. The reversal of 7665499505 is 5059945667.

It can be written as a sum of positive squares in 8 ways, for example, as 549058624 + 7116440881 = 23432^2 + 84359^2 .

It is a cyclic number.

It is not a de Polignac number, because 7665499505 - 2⁴ = 7665499489 is a prime.

It is a super-2 number, since 2×7665499505² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7665499507) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 910877 + ... + 919253.

It is an arithmetic number, because the mean of its divisors is an integer number (578521845).

Almost surely, 2^7665499505 is an apocalyptic number.

It is an amenable number.

7665499505 is a deficient number, since it is larger than the sum of its proper divisors (1590850015).

7665499505 is a wasteful number, since it uses less digits than its factorization.

7665499505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9508.

The product of its (nonzero) digits is 10206000, while the sum is 56.

The square root of 7665499505 is about 87552.8383606151. The cubic root of 7665499505 is about 1971.7271654962.

The spelling of 7665499505 in words is "seven billion, six hundred sixty-five million, four hundred ninety-nine thousand, five hundred five".