63689285 has 8 divisors (see below), whose sum is σ = 83375136. Its totient is φ = 46319440.

The previous prime is 63689279. The next prime is 63689309. The reversal of 63689285 is 58298636.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 63689285 - 2⁸ = 63689029 is a prime.

It is a super-3 number, since 3×63689285³ (a number of 24 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 578939 + ... + 579048.

It is an arithmetic number, because the mean of its divisors is an integer number (10421892).

Almost surely, 2^63689285 is an apocalyptic number.

It is an amenable number.

63689285 is a deficient number, since it is larger than the sum of its proper divisors (19685851).

63689285 is a wasteful number, since it uses less digits than its factorization.

63689285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1158003.

The product of its digits is 622080, while the sum is 47.

The square root of 63689285 is about 7980.5566848435. The cubic root of 63689285 is about 399.3516266813.

The spelling of 63689285 in words is "sixty-three million, six hundred eighty-nine thousand, two hundred eighty-five".