632840 has 32 divisors (see below), whose sum is σ = 1534680. Its totient is φ = 233472.

The previous prime is 632839. The next prime is 632843. The reversal of 632840 is 48236.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 343396 + 289444 = 586^2 + 538^2 .

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (632843) 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, 89 + ... + 1128.

2⁶³²⁸⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 632840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (767340).

632840 is an abundant number, since it is smaller than the sum of its proper divisors (901840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

632840 is a wasteful number, since it uses less digits than its factorization.

632840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1241 (or 1237 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 23.

The square root of 632840 is about 795.5124134795. The cubic root of 632840 is about 85.8548118137.

The spelling of 632840 in words is "six hundred thirty-two thousand, eight hundred forty".