64263285 has 24 divisors (see below), whose sum is σ = 113983584. Its totient is φ = 33475680.

The previous prime is 64263271. The next prime is 64263289. The reversal of 64263285 is 58236246.

64263285 is a `hidden beast` number, since 642 + 6 + 3 + 2 + 8 + 5 = 666.

It is not a de Polignac number, because 64263285 - 2⁸ = 64263029 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64263289) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 14671 + ... + 18540.

It is an arithmetic number, because the mean of its divisors is an integer number (4749316).

Almost surely, 2^64263285 is an apocalyptic number.

It is an amenable number.

64263285 is a deficient number, since it is larger than the sum of its proper divisors (49720299).

64263285 is a wasteful number, since it uses less digits than its factorization.

64263285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33265 (or 33262 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 64263285 is about 8016.4384236393. The cubic root of 64263285 is about 400.5477599718.

The spelling of 64263285 in words is "sixty-four million, two hundred sixty-three thousand, two hundred eighty-five".