65983811 has 6 divisors (see below), whose sum is σ = 66987900. Its totient is φ = 64994556.

The previous prime is 65983793. The next prime is 65983873. The reversal of 65983811 is 11838956.

It is a de Polignac number, because none of the positive numbers 2^k-65983811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65982811) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2861 + ... + 11838.

It is an arithmetic number, because the mean of its divisors is an integer number (11164650).

Almost surely, 2^65983811 is an apocalyptic number.

65983811 is a deficient number, since it is larger than the sum of its proper divisors (1004089).

65983811 is an equidigital number, since it uses as much as digits as its factorization.

65983811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14833 (or 14766 counting only the distinct ones).

The product of its digits is 51840, while the sum is 41.

The square root of 65983811 is about 8123.0419794557. The cubic root of 65983811 is about 404.0909571205.

The spelling of 65983811 in words is "sixty-five million, nine hundred eighty-three thousand, eight hundred eleven".