623430 has 32 divisors (see below), whose sum is σ = 1663200. Its totient is φ = 166176.

The previous prime is 623423. The next prime is 623431. The reversal of 623430 is 34326.

623430 is a `hidden beast` number, since 623 + 43 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623431) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 885 + ... + 1424.

It is an arithmetic number, because the mean of its divisors is an integer number (51975).

2⁶²³⁴³⁰ is an apocalyptic number.

623430 is an abundant number, since it is smaller than the sum of its proper divisors (1039770).

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

623430 is a wasteful number, since it uses less digits than its factorization.

623430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2325 (or 2319 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 623430 is about 789.5758354965. The cubic root of 623430 is about 85.4271463115.

Adding to 623430 its reverse (34326), we get a palindrome (657756).

It can be divided in two parts, 6 and 23430, that added together give a triangular number (23436 = T₂₁₆).

The spelling of 623430 in words is "six hundred twenty-three thousand, four hundred thirty".