64446306 has 32 divisors (see below), whose sum is σ = 132496128. Its totient is φ = 20887680.

The previous prime is 64446289. The next prime is 64446329. The reversal of 64446306 is 60364446.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 48126 + ... + 49446.

It is an arithmetic number, because the mean of its divisors is an integer number (4140504).

Almost surely, 2^64446306 is an apocalyptic number.

64446306 is an abundant number, since it is smaller than the sum of its proper divisors (68049822).

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

64446306 is a wasteful number, since it uses less digits than its factorization.

64446306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546.

The product of its (nonzero) digits is 41472, while the sum is 33.

The square root of 64446306 is about 8027.8456636884. The cubic root of 64446306 is about 400.9276511619.

The spelling of 64446306 in words is "sixty-four million, four hundred forty-six thousand, three hundred six".