623868 has 36 divisors (see below), whose sum is σ = 1694952. Its totient is φ = 178080.

The previous prime is 623867. The next prime is 623869. The reversal of 623868 is 868326.

623868 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (623867) and next prime (623869).

It is a super-2 number, since 2×623868² = 778422562848, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623867) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58 + ... + 1118.

It is an arithmetic number, because the mean of its divisors is an integer number (47082).

2⁶²³⁸⁶⁸ 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 623868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (847476).

623868 is an abundant number, since it is smaller than the sum of its proper divisors (1071084).

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

623868 is a wasteful number, since it uses less digits than its factorization.

623868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1082 (or 1073 counting only the distinct ones).

The product of its digits is 13824, while the sum is 33.

The square root of 623868 is about 789.8531509084. The cubic root of 623868 is about 85.4471476647.

The spelling of 623868 in words is "six hundred twenty-three thousand, eight hundred sixty-eight".