630824 has 8 divisors (see below), whose sum is σ = 1182810. Its totient is φ = 315408.

The previous prime is 630823. The next prime is 630827. The reversal of 630824 is 428036.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 624100 + 6724 = 790^2 + 82^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 630824.

It is not an unprimeable number, because it can be changed into a prime (630823) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39419 + ... + 39434.

2⁶³⁰⁸²⁴ is an apocalyptic number.

It is an amenable number.

630824 is a deficient number, since it is larger than the sum of its proper divisors (551986).

630824 is a wasteful number, since it uses less digits than its factorization.

630824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78859 (or 78855 counting only the distinct ones).

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

The square root of 630824 is about 794.2442949118. The cubic root of 630824 is about 85.7635473444.

The spelling of 630824 in words is "six hundred thirty thousand, eight hundred twenty-four".