623817216 has 240 divisors, whose sum is σ = 2032512768. Its totient is φ = 182476800.

The previous prime is 623817197. The next prime is 623817223. The reversal of 623817216 is 612718326.

623817216 is a `hidden beast` number, since 62 + 381 + 7 + 216 = 666.

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

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 23 ways as a sum of consecutive naturals, for example, 1571130 + ... + 1571526.

Almost surely, 2^623817216 is an apocalyptic number.

623817216 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 623817216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1016256384).

623817216 is an abundant number, since it is smaller than the sum of its proper divisors (1408695552).

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

623817216 is a wasteful number, since it uses less digits than its factorization.

623817216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 463 (or 444 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 623817216 is about 24976.3331175735. Note that the first 3 decimals coincide. The cubic root of 623817216 is about 854.4482908362.

The spelling of 623817216 in words is "six hundred twenty-three million, eight hundred seventeen thousand, two hundred sixteen".