623366240 has 144 divisors (see below), whose sum is σ = 1788145632. Its totient is φ = 204374016.

The previous prime is 623366221. The next prime is 623366257. The reversal of 623366240 is 42663326.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 623366197 and 623366206.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 178592 + ... + 182048.

It is an arithmetic number, because the mean of its divisors is an integer number (12417678).

Almost surely, 2^623366240 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 623366240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (894072816).

623366240 is an abundant number, since it is smaller than the sum of its proper divisors (1164779392).

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

623366240 is a wasteful number, since it uses less digits than its factorization.

623366240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3509 (or 3494 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 32.

The square root of 623366240 is about 24967.3034186714. The cubic root of 623366240 is about 854.2423391799.

The spelling of 623366240 in words is "six hundred twenty-three million, three hundred sixty-six thousand, two hundred forty".