623441000 has 384 divisors, whose sum is σ = 1973237760. Its totient is φ = 179712000.

The previous prime is 623440943. The next prime is 623441011. The reversal of 623441000 is 144326.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 20110985 + ... + 20111015.

It is an arithmetic number, because the mean of its divisors is an integer number (5138640).

Almost surely, 2^623441000 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 623441000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (986618880).

623441000 is an abundant number, since it is smaller than the sum of its proper divisors (1349796760).

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

623441000 is a wasteful number, since it uses less digits than its factorization.

623441000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102 (or 75 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 623441000 is about 24968.8005318638. The cubic root of 623441000 is about 854.2764874330.

Adding to 623441000 its reverse (144326), we get a palindrome (623585326).

The spelling of 623441000 in words is "six hundred twenty-three million, four hundred forty-one thousand".