623216 has 20 divisors (see below), whose sum is σ = 1317624. Its totient is φ = 283200.

The previous prime is 623209. The next prime is 623221. The reversal of 623216 is 612326.

It is a congruent number.

It is an unprimeable number.

623216 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1595 + ... + 1946.

2⁶²³²¹⁶ is an apocalyptic number.

It is an amenable number.

623216 is an abundant number, since it is smaller than the sum of its proper divisors (694408).

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

623216 is a wasteful number, since it uses less digits than its factorization.

623216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3560 (or 3554 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 623216 is about 789.4403080664. The cubic root of 623216 is about 85.4173705541.

The spelling of 623216 in words is "six hundred twenty-three thousand, two hundred sixteen".