64430445 has 32 divisors (see below), whose sum is σ = 105114240. Its totient is φ = 33696000.

The previous prime is 64430423. The next prime is 64430447. The reversal of 64430445 is 54403446.

It is not a de Polignac number, because 64430445 - 2⁵ = 64430413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64430447) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 256570 + ... + 256820.

It is an arithmetic number, because the mean of its divisors is an integer number (3284820).

Almost surely, 2^64430445 is an apocalyptic number.

It is an amenable number.

64430445 is a deficient number, since it is larger than the sum of its proper divisors (40683795).

64430445 is a wasteful number, since it uses less digits than its factorization.

64430445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 525.

The product of its (nonzero) digits is 23040, while the sum is 30.

The square root of 64430445 is about 8026.8577288999. The cubic root of 64430445 is about 400.8947574471.

The spelling of 64430445 in words is "sixty-four million, four hundred thirty thousand, four hundred forty-five".