634287 has 8 divisors (see below), whose sum is σ = 895536. Its totient is φ = 397952.

The previous prime is 634279. The next prime is 634301. The reversal of 634287 is 782436.

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

It is a cyclic number.

It is not a de Polignac number, because 634287 - 2³ = 634279 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 634287.

It is not an unprimeable number, because it can be changed into a prime (634237) 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 7 ways as a sum of consecutive naturals, for example, 6168 + ... + 6269.

It is an arithmetic number, because the mean of its divisors is an integer number (111942).

2⁶³⁴²⁸⁷ is an apocalyptic number.

634287 is a deficient number, since it is larger than the sum of its proper divisors (261249).

634287 is a wasteful number, since it uses less digits than its factorization.

634287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12457.

The product of its digits is 8064, while the sum is 30.

The square root of 634287 is about 796.4213708835. The cubic root of 634287 is about 85.9201981918.

The spelling of 634287 in words is "six hundred thirty-four thousand, two hundred eighty-seven".