64345563 has 8 divisors (see below), whose sum is σ = 95326800. Its totient is φ = 42897024.

The previous prime is 64345549. The next prime is 64345583. The reversal of 64345563 is 36554346.

64345563 is a `hidden beast` number, since 64 + 34 + 5 + 563 = 666.

It is not a de Polignac number, because 64345563 - 2⁵ = 64345531 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64345543) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1191558 + ... + 1191611.

It is an arithmetic number, because the mean of its divisors is an integer number (11915850).

Almost surely, 2^64345563 is an apocalyptic number.

64345563 is a deficient number, since it is larger than the sum of its proper divisors (30981237).

64345563 is a wasteful number, since it uses less digits than its factorization.

64345563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2383178 (or 2383172 counting only the distinct ones).

The product of its digits is 129600, while the sum is 36.

The square root of 64345563 is about 8021.5686121855. The cubic root of 64345563 is about 400.7186310670.

The spelling of 64345563 in words is "sixty-four million, three hundred forty-five thousand, five hundred sixty-three".