634487285 has 8 divisors (see below), whose sum is σ = 781962936. Its totient is φ = 493871040.

The previous prime is 634487281. The next prime is 634487299. The reversal of 634487285 is 582784436.

634487285 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 37075921 + 597411364 = 6089^2 + 24442^2 .

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

It is not a de Polignac number, because 634487285 - 2² = 634487281 is a prime.

It is a super-2 number, since 2×634487285² = 805148229653342450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (634487281) 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, 1714646 + ... + 1715015.

It is an arithmetic number, because the mean of its divisors is an integer number (97745367).

Almost surely, 2^634487285 is an apocalyptic number.

It is an amenable number.

634487285 is a deficient number, since it is larger than the sum of its proper divisors (147475651).

634487285 is a wasteful number, since it uses less digits than its factorization.

634487285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429703.

The product of its digits is 1290240, while the sum is 47.

The square root of 634487285 is about 25189.0310452784. The cubic root of 634487285 is about 859.2924074189.

The spelling of 634487285 in words is "six hundred thirty-four million, four hundred eighty-seven thousand, two hundred eighty-five".