64446308 has 6 divisors (see below), whose sum is σ = 112781046. Its totient is φ = 32223152.

The previous prime is 64446289. The next prime is 64446329. The reversal of 64446308 is 80364446.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 57274624 + 7171684 = 7568^2 + 2678^2 .

It is a super-2 number, since 2×64446308² = 8306653229661728, which contains 22 as substring.

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 as a sum of consecutive naturals, namely, 8055785 + ... + 8055792.

It is an arithmetic number, because the mean of its divisors is an integer number (18796841).

Almost surely, 2^64446308 is an apocalyptic number.

It is an amenable number.

64446308 is a deficient number, since it is larger than the sum of its proper divisors (48334738).

64446308 is a wasteful number, since it uses less digits than its factorization.

64446308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16111581 (or 16111579 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 35.

The square root of 64446308 is about 8027.8457882548. The cubic root of 64446308 is about 400.9276553093.

The spelling of 64446308 in words is "sixty-four million, four hundred forty-six thousand, three hundred eight".