65612012 has 12 divisors (see below), whose sum is σ = 116767560. Its totient is φ = 32249856.

The previous prime is 65612003. The next prime is 65612051. The reversal of 65612012 is 21021656.

It is a super-2 number, since 2×65612012² = 8609872237376288, which contains 22 as substring.

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, 138773 + ... + 139244.

It is an arithmetic number, because the mean of its divisors is an integer number (9730630).

Almost surely, 2^65612012 is an apocalyptic number.

It is an amenable number.

65612012 is a deficient number, since it is larger than the sum of its proper divisors (51155548).

65612012 is a wasteful number, since it uses less digits than its factorization.

65612012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278080 (or 278078 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 65612012 is about 8100.1241965787. The cubic root of 65612012 is about 403.3305499584.

Adding to 65612012 its reverse (21021656), we get a palindrome (86633668).

The spelling of 65612012 in words is "sixty-five million, six hundred twelve thousand, twelve".