65712012 has 48 divisors (see below), whose sum is σ = 163924992. Its totient is φ = 20437120.

The previous prime is 65711951. The next prime is 65712047. The reversal of 65712012 is 21021756.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8413 + ... + 14219.

It is an arithmetic number, because the mean of its divisors is an integer number (3415104).

Almost surely, 2^65712012 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65712012, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81962496).

65712012 is an abundant number, since it is smaller than the sum of its proper divisors (98212980).

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

65712012 is a wasteful number, since it uses less digits than its factorization.

65712012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5878 (or 5876 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 24.

The square root of 65712012 is about 8106.2945912420. The cubic root of 65712012 is about 403.5353528109.

Adding to 65712012 its reverse (21021756), we get a palindrome (86733768).

The spelling of 65712012 in words is "sixty-five million, seven hundred twelve thousand, twelve".