65765715 has 16 divisors (see below), whose sum is σ = 105775008. Its totient is φ = 34891776.

The previous prime is 65765701. The next prime is 65765723. The reversal of 65765715 is 51756756.

It is not a de Polignac number, because 65765715 - 2⁴ = 65765699 is a prime.

It is a super-3 number, since 3×65765715³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8464 + ... + 14253.

It is an arithmetic number, because the mean of its divisors is an integer number (6610938).

Almost surely, 2^65765715 is an apocalyptic number.

65765715 is a deficient number, since it is larger than the sum of its proper divisors (40009293).

65765715 is a wasteful number, since it uses less digits than its factorization.

65765715 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22918.

The product of its digits is 220500, while the sum is 42.

The square root of 65765715 is about 8109.6063406308. The cubic root of 65765715 is about 403.6452523433.

The spelling of 65765715 in words is "sixty-five million, seven hundred sixty-five thousand, seven hundred fifteen".