65870836 has 18 divisors (see below), whose sum is σ = 116302578. Its totient is φ = 32644080.

The previous prime is 65870821. The next prime is 65870839. The reversal of 65870836 is 63807856.

It can be written as a sum of positive squares in only one way, i.e., 58064400 + 7806436 = 7620^2 + 2794^2 .

It is a junction number, because it is equal to n+sod(n) for n = 65870792 and 65870801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65870839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 64006 + ... + 65026.

Almost surely, 2^65870836 is an apocalyptic number.

It is an amenable number.

65870836 is a deficient number, since it is larger than the sum of its proper divisors (50431742).

65870836 is a wasteful number, since it uses less digits than its factorization.

65870836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1279 (or 1150 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 43.

The square root of 65870836 is about 8116.0850168046. The cubic root of 65870836 is about 403.8602022598.

The spelling of 65870836 in words is "sixty-five million, eight hundred seventy thousand, eight hundred thirty-six".