65612011 has 4 divisors (see below), whose sum is σ = 65716624. Its totient is φ = 65507400.

The previous prime is 65612003. The next prime is 65612051. The reversal of 65612011 is 11021656.

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

It is a cyclic number.

It is not a de Polignac number, because 65612011 - 2³ = 65612003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (65612051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51360 + ... + 52621.

It is an arithmetic number, because the mean of its divisors is an integer number (16429156).

Almost surely, 2^65612011 is an apocalyptic number.

65612011 is a deficient number, since it is larger than the sum of its proper divisors (104613).

65612011 is a wasteful number, since it uses less digits than its factorization.

65612011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104612.

The product of its (nonzero) digits is 360, while the sum is 22.

The square root of 65612011 is about 8100.1241348513. The cubic root of 65612011 is about 403.3305479093.

Adding to 65612011 its reverse (11021656), we get a palindrome (76633667).

The spelling of 65612011 in words is "sixty-five million, six hundred twelve thousand, eleven".