65613012 has 24 divisors (see below), whose sum is σ = 156658656. Its totient is φ = 21362208.

The previous prime is 65613001. The next prime is 65613049. The reversal of 65613012 is 21031656.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 63063 + ... + 64094.

It is an arithmetic number, because the mean of its divisors is an integer number (6527444).

Almost surely, 2^65613012 is an apocalyptic number.

It is an amenable number.

65613012 is an abundant number, since it is smaller than the sum of its proper divisors (91045644).

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

65613012 is a wasteful number, since it uses less digits than its factorization.

65613012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127207 (or 127205 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 24.

The square root of 65613012 is about 8100.1859237921. The cubic root of 65613012 is about 403.3325990166.

Adding to 65613012 its reverse (21031656), we get a palindrome (86644668).

The spelling of 65613012 in words is "sixty-five million, six hundred thirteen thousand, twelve".