64045505 has 4 divisors (see below), whose sum is σ = 76854612. Its totient is φ = 51236400.

The previous prime is 64045493. The next prime is 64045517. The reversal of 64045505 is 50554046.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (64045493) and next prime (64045517).

It can be written as a sum of positive squares in 2 ways, for example, as 21169201 + 42876304 = 4601^2 + 6548^2 .

It is not a de Polignac number, because 64045505 - 2⁴ = 64045489 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6404546 + ... + 6404555.

It is an arithmetic number, because the mean of its divisors is an integer number (19213653).

Almost surely, 2^64045505 is an apocalyptic number.

It is an amenable number.

64045505 is a deficient number, since it is larger than the sum of its proper divisors (12809107).

64045505 is a wasteful number, since it uses less digits than its factorization.

64045505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12809106.

The product of its (nonzero) digits is 12000, while the sum is 29.

The square root of 64045505 is about 8002.8435571364. The cubic root of 64045505 is about 400.0947796236.

The spelling of 64045505 in words is "sixty-four million, forty-five thousand, five hundred five".