623912 has 16 divisors (see below), whose sum is σ = 1179360. Its totient is φ = 309424.

The previous prime is 623893. The next prime is 623923. The reversal of 623912 is 219326.

It is an unprimeable number.

623912 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, 1103 + ... + 1569.

It is an arithmetic number, because the mean of its divisors is an integer number (73710).

2⁶²³⁹¹² is an apocalyptic number.

It is an amenable number.

623912 is a deficient number, since it is larger than the sum of its proper divisors (555448).

623912 is a wasteful number, since it uses less digits than its factorization.

623912 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640 (or 636 counting only the distinct ones).

The product of its digits is 648, while the sum is 23.

The square root of 623912 is about 789.8810036961. The cubic root of 623912 is about 85.4491564156.

The spelling of 623912 in words is "six hundred twenty-three thousand, nine hundred twelve".