7749965065 has 8 divisors (see below), whose sum is σ = 9427355208. Its totient is φ = 6115040640.

The previous prime is 7749965053. The next prime is 7749965071. The reversal of 7749965065 is 5605699477.

It can be written as a sum of positive squares in 4 ways, for example, as 1185562624 + 6564402441 = 34432^2 + 81021^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7749965065 - 2¹⁵ = 7749932297 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10616026 + ... + 10616755.

It is an arithmetic number, because the mean of its divisors is an integer number (1178419401).

Almost surely, 2^7749965065 is an apocalyptic number.

It is an amenable number.

7749965065 is a deficient number, since it is larger than the sum of its proper divisors (1677390143).

7749965065 is a wasteful number, since it uses less digits than its factorization.

7749965065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21232859.

The product of its (nonzero) digits is 14288400, while the sum is 58.

The square root of 7749965065 is about 88033.8858906046. The cubic root of 7749965065 is about 1978.9428313101.

The spelling of 7749965065 in words is "seven billion, seven hundred forty-nine million, nine hundred sixty-five thousand, sixty-five".