64308312 has 96 divisors (see below), whose sum is σ = 189774000. Its totient is φ = 19595520.

The previous prime is 64308301. The next prime is 64308323. The reversal of 64308312 is 21380346.

It is a happy number.

64308312 is a `hidden beast` number, since 643 + 0 + 8 + 3 + 12 = 666.

It is an interprime number because it is at equal distance from previous prime (64308301) and next prime (64308323).

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, 38862 + ... + 40482.

Almost surely, 2^64308312 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 64308312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94887000).

64308312 is an abundant number, since it is smaller than the sum of its proper divisors (125465688).

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

64308312 is a wasteful number, since it uses less digits than its factorization.

64308312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1681 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 64308312 is about 8019.2463486290. The cubic root of 64308312 is about 400.6412879915.

Adding to 64308312 its reverse (21380346), we get a palindrome (85688658).

It can be divided in two parts, 64308 and 312, that added together give a triangular number (64620 = T₃₅₉).

The spelling of 64308312 in words is "sixty-four million, three hundred eight thousand, three hundred twelve".