623842 has 8 divisors (see below), whose sum is σ = 940032. Its totient is φ = 310500.

The previous prime is 623839. The next prime is 623851. The reversal of 623842 is 248326.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34 + ... + 1117.

It is an arithmetic number, because the mean of its divisors is an integer number (117504).

2⁶²³⁸⁴² is an apocalyptic number.

623842 is a deficient number, since it is larger than the sum of its proper divisors (316190).

623842 is a wasteful number, since it uses less digits than its factorization.

623842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1424.

The product of its digits is 2304, while the sum is 25.

The square root of 623842 is about 789.8366919813. The cubic root of 623842 is about 85.4459606312.

The spelling of 623842 in words is "six hundred twenty-three thousand, eight hundred forty-two".