64446 has 16 divisors (see below), whose sum is σ = 134784. Its totient is φ = 20504.

The previous prime is 64439. The next prime is 64451.

64446 is nontrivially palindromic in base 10.

It is a plaindrome in base 11 and base 13.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96 + ... + 371.

It is an arithmetic number, because the mean of its divisors is an integer number (8424).

2⁶⁴⁴⁴⁶ is an apocalyptic number.

64446 is an abundant number, since it is smaller than the sum of its proper divisors (70338).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (67392).

64446 is a wasteful number, since it uses less digits than its factorization.

64446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495.

The product of its digits is 2304, while the sum is 24.

The square root of 64446 is about 253.8621673271. The cubic root of 64446 is about 40.0927016608.

The spelling of 64446 in words is "sixty-four thousand, four hundred forty-six".