623678 has 8 divisors (see below), whose sum is σ = 1020600. Its totient is φ = 283480.

The previous prime is 623677. The next prime is 623681. The reversal of 623678 is 876326.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (623671) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14153 + ... + 14196.

It is an arithmetic number, because the mean of its divisors is an integer number (127575).

2⁶²³⁶⁷⁸ is an apocalyptic number.

623678 is a deficient number, since it is larger than the sum of its proper divisors (396922).

623678 is a wasteful number, since it uses less digits than its factorization.

623678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28362.

The product of its digits is 12096, while the sum is 32.

The square root of 623678 is about 789.7328662276. The cubic root of 623678 is about 85.4384724287.

The spelling of 623678 in words is "six hundred twenty-three thousand, six hundred seventy-eight".