623612 has 12 divisors (see below), whose sum is σ = 1190616. Its totient is φ = 283440.

The previous prime is 623591. The next prime is 623617. The reversal of 623612 is 216326.

It is a hoax number, since the sum of its digits (20) coincides with the sum of the digits of its distinct prime factors.

It is a d-powerful number, because it can be written as 6³ + 2¹⁵ + 6⁶ + 3⁹ + 1 + 2¹⁹ .

It is a plaindrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623617) by changing a digit.

623612 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7043 + ... + 7130.

It is an arithmetic number, because the mean of its divisors is an integer number (99218).

2⁶²³⁶¹² is an apocalyptic number.

It is an amenable number.

623612 is a deficient number, since it is larger than the sum of its proper divisors (567004).

623612 is a wasteful number, since it uses less digits than its factorization.

623612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14188 (or 14186 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 623612 is about 789.6910788403. The cubic root of 623612 is about 85.4354585133.

Adding to 623612 its reverse (216326), we get a palindrome (839938).

The spelling of 623612 in words is "six hundred twenty-three thousand, six hundred twelve".