623400768 has 84 divisors (see below), whose sum is σ = 1792589760. Its totient is φ = 207134976.

The previous prime is 623400707. The next prime is 623400779. The reversal of 623400768 is 867004326.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable 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 11 ways as a sum of consecutive naturals, for example, 198313 + ... + 201431.

Almost surely, 2^623400768 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 623400768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (896294880).

623400768 is an abundant number, since it is smaller than the sum of its proper divisors (1169188992).

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

623400768 is a wasteful number, since it uses less digits than its factorization.

623400768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3484 (or 3471 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 36.

The square root of 623400768 is about 24967.9948734375. The cubic root of 623400768 is about 854.2581109328.

The spelling of 623400768 in words is "six hundred twenty-three million, four hundred thousand, seven hundred sixty-eight".