65700065 has 4 divisors (see below), whose sum is σ = 78840084. Its totient is φ = 52560048.

The previous prime is 65700059. The next prime is 65700071. The reversal of 65700065 is 56000756.

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

It is an interprime number because it is at equal distance from previous prime (65700059) and next prime (65700071).

It can be written as a sum of positive squares in 2 ways, for example, as 46348864 + 19351201 = 6808^2 + 4399^2 .

It is a cyclic number.

It is not a de Polignac number, because 65700065 - 2¹⁶ = 65634529 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, 6570002 + ... + 6570011.

It is an arithmetic number, because the mean of its divisors is an integer number (19710021).

Almost surely, 2^65700065 is an apocalyptic number.

It is an amenable number.

65700065 is a deficient number, since it is larger than the sum of its proper divisors (13140019).

65700065 is a wasteful number, since it uses less digits than its factorization.

65700065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13140018.

The product of its (nonzero) digits is 6300, while the sum is 29.

The square root of 65700065 is about 8105.5576612593. The cubic root of 65700065 is about 403.5108959477.

The spelling of 65700065 in words is "sixty-five million, seven hundred thousand, sixty-five".