63285391 has 4 divisors (see below), whose sum is σ = 68153512. Its totient is φ = 58417272.

The previous prime is 63285389. The next prime is 63285401. The reversal of 63285391 is 19358236.

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 63285391 - 2¹ = 63285389 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 63285391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63285361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2434041 + ... + 2434066.

It is an arithmetic number, because the mean of its divisors is an integer number (17038378).

Almost surely, 2^63285391 is an apocalyptic number.

63285391 is a deficient number, since it is larger than the sum of its proper divisors (4868121).

63285391 is a wasteful number, since it uses less digits than its factorization.

63285391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4868120.

The product of its digits is 38880, while the sum is 37.

The square root of 63285391 is about 7955.2115622402. The cubic root of 63285391 is about 398.5056555386.

The spelling of 63285391 in words is "sixty-three million, two hundred eighty-five thousand, three hundred ninety-one".