65312412 has 72 divisors (see below), whose sum is σ = 173031936. Its totient is φ = 19140000.

The previous prime is 65312339. The next prime is 65312431. The reversal of 65312412 is 21421356.

It is a super-2 number, since 2×65312412² = 8531422322515488, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44287 + ... + 45737.

Almost surely, 2^65312412 is an apocalyptic number.

65312412 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 65312412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86515968).

65312412 is an abundant number, since it is smaller than the sum of its proper divisors (107719524).

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

65312412 is a wasteful number, since it uses less digits than its factorization.

65312412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1511 (or 1498 counting only the distinct ones).

The product of its digits is 1440, while the sum is 24.

The square root of 65312412 is about 8081.6094931641. The cubic root of 65312412 is about 402.7157122084.

Adding to 65312412 its reverse (21421356), we get a palindrome (86733768).

The spelling of 65312412 in words is "sixty-five million, three hundred twelve thousand, four hundred twelve".