65310012 has 18 divisors (see below), whose sum is σ = 165089288. Its totient is φ = 21769992.

The previous prime is 65309999. The next prime is 65310017. The reversal of 65310012 is 21001356.

65310012 is a `hidden beast` number, since 653 + 1 + 0 + 0 + 12 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (65310017) 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, 907048 + ... + 907119.

Almost surely, 2^65310012 is an apocalyptic number.

It is an amenable number.

65310012 is an abundant number, since it is smaller than the sum of its proper divisors (99779276).

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

65310012 is a wasteful number, since it uses less digits than its factorization.

65310012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1814177 (or 1814172 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 18.

The square root of 65310012 is about 8081.4610065260. The cubic root of 65310012 is about 402.7107793555.

Adding to 65310012 its reverse (21001356), we get a palindrome (86311368).

The spelling of 65310012 in words is "sixty-five million, three hundred ten thousand, twelve".