64505419 has 4 divisors (see below), whose sum is σ = 70369560. Its totient is φ = 58641280.

The previous prime is 64505381. The next prime is 64505447. The reversal of 64505419 is 91450546.

64505419 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 64505419 - 2⁹ = 64504907 is a prime.

It is a super-2 number, since 2×64505419² = 8321898160731122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64505449) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2932054 + ... + 2932075.

It is an arithmetic number, because the mean of its divisors is an integer number (17592390).

Almost surely, 2^64505419 is an apocalyptic number.

64505419 is a deficient number, since it is larger than the sum of its proper divisors (5864141).

64505419 is a wasteful number, since it uses less digits than its factorization.

64505419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5864140.

The product of its (nonzero) digits is 21600, while the sum is 34.

The square root of 64505419 is about 8031.5265672224. The cubic root of 64505419 is about 401.0501965549.

The spelling of 64505419 in words is "sixty-four million, five hundred five thousand, four hundred nineteen".