64812132 has 144 divisors (see below), whose sum is σ = 207148032. Its totient is φ = 16597440.

The previous prime is 64812113. The next prime is 64812133. The reversal of 64812132 is 23121846.

64812132 is a `hidden beast` number, since 648 + 1 + 2 + 13 + 2 = 666.

It is a super-2 number, since 2×64812132² = 8401224908770848, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64812096 and 64812105.

It is not an unprimeable number, because it can be changed into a prime (64812133) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 285403 + ... + 285629.

It is an arithmetic number, because the mean of its divisors is an integer number (1438528).

Almost surely, 2^64812132 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 64812132, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103574016).

64812132 is an abundant number, since it is smaller than the sum of its proper divisors (142335900).

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

64812132 is a wasteful number, since it uses less digits than its factorization.

64812132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358 (or 353 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 64812132 is about 8050.5982386404. The cubic root of 64812132 is about 401.6848350300.

Adding to 64812132 its reverse (23121846), we get a palindrome (87933978).

The spelling of 64812132 in words is "sixty-four million, eight hundred twelve thousand, one hundred thirty-two".