65811136 has 28 divisors (see below), whose sum is σ = 137469880. Its totient is φ = 31173120.

The previous prime is 65811127. The next prime is 65811167. The reversal of 65811136 is 63111856.

It is a super-2 number, since 2×65811136² = 8662211243220992, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 65811098 and 65811107.

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, 25845 + ... + 28276.

Almost surely, 2^65811136 is an apocalyptic number.

It is an amenable number.

65811136 is an abundant number, since it is smaller than the sum of its proper divisors (71658744).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

65811136 is a wasteful number, since it uses less digits than its factorization.

65811136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54152 (or 54142 counting only the distinct ones).

The product of its digits is 4320, while the sum is 31.

The square root of 65811136 is about 8112.4063014620. The cubic root of 65811136 is about 403.7381566368.

The spelling of 65811136 in words is "sixty-five million, eight hundred eleven thousand, one hundred thirty-six".