623964 has 48 divisors (see below), whose sum is σ = 1653120. Its totient is φ = 181440.

The previous prime is 623963. The next prime is 623977. The reversal of 623964 is 469326.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a d-powerful number, because it can be written as 6⁶ + 2¹⁹ + 9² + 3⁷ + 6⁶ + 4⁶ .

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 (623963) 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, 3747 + ... + 3909.

It is an arithmetic number, because the mean of its divisors is an integer number (34440).

2⁶²³⁹⁶⁴ 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 623964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (826560).

623964 is an abundant number, since it is smaller than the sum of its proper divisors (1029156).

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

623964 is a wasteful number, since it uses less digits than its factorization.

623964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210 (or 208 counting only the distinct ones).

The product of its digits is 7776, while the sum is 30.

The square root of 623964 is about 789.9139193608. The cubic root of 623964 is about 85.4515302721.

The spelling of 623964 in words is "six hundred twenty-three thousand, nine hundred sixty-four".