523630 has 8 divisors (see below), whose sum is σ = 942552. Its totient is φ = 209448.

The previous prime is 523603. The next prime is 523631. The reversal of 523630 is 36325.

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

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 523598 and 523607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (523631) by changing a digit.

523630 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26172 + ... + 26191.

It is an arithmetic number, because the mean of its divisors is an integer number (117819).

2⁵²³⁶³⁰ is an apocalyptic number.

523630 is a deficient number, since it is larger than the sum of its proper divisors (418922).

523630 is a wasteful number, since it uses less digits than its factorization.

523630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52370.

The product of its (nonzero) digits is 540, while the sum is 19.

The square root of 523630 is about 723.6228299328. The cubic root of 523630 is about 80.6011998335.

Adding to 523630 its reverse (36325), we get a palindrome (559955).

It can be divided in two parts, 5236 and 30, that multiplied together give a triangular number (157080 = T₅₆₀).

The spelling of 523630 in words is "five hundred twenty-three thousand, six hundred thirty".