64000332 has 72 divisors (see below), whose sum is σ = 182604240. Its totient is φ = 18721920.

The previous prime is 64000319. The next prime is 64000351. The reversal of 64000332 is 23300046.

It is a super-2 number, since 2×64000332² = 8192084992220448, which contains 22 as substring.

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8698 + ... + 14270.

It is an arithmetic number, because the mean of its divisors is an integer number (2536170).

Almost surely, 2^64000332 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 64000332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91302120).

64000332 is an abundant number, since it is smaller than the sum of its proper divisors (118603908).

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

64000332 is a wasteful number, since it uses less digits than its factorization.

64000332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5623 (or 5618 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 64000332 is about 8000.0207499731. The cubic root of 64000332 is about 400.0006916655. Note that the first 3 decimals are identical.

Adding to 64000332 its reverse (23300046), we get a palindrome (87300378).

The spelling of 64000332 in words is "sixty-four million, three hundred thirty-two", and thus it is an aban number.