64331445 has 16 divisors (see below), whose sum is σ = 103951872. Its totient is φ = 33969600.

The previous prime is 64331413. The next prime is 64331489. The reversal of 64331445 is 54413346.

It is not a de Polignac number, because 64331445 - 2⁵ = 64331413 is a prime.

It is a congruent 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, 19717 + ... + 22746.

It is an arithmetic number, because the mean of its divisors is an integer number (6496992).

Almost surely, 2^64331445 is an apocalyptic number.

It is an amenable number.

64331445 is a deficient number, since it is larger than the sum of its proper divisors (39620427).

64331445 is a wasteful number, since it uses less digits than its factorization.

64331445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42572.

The product of its digits is 17280, while the sum is 30.

The square root of 64331445 is about 8020.6885614640. The cubic root of 64331445 is about 400.6893218229.

The spelling of 64331445 in words is "sixty-four million, three hundred thirty-one thousand, four hundred forty-five".