123646 has 8 divisors (see below), whose sum is σ = 186984. Its totient is φ = 61320.

The previous prime is 123637. The next prime is 123653. The reversal of 123646 is 646321.

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, 276 + ... + 568.

It is an arithmetic number, because the mean of its divisors is an integer number (23373).

2¹²³⁶⁴⁶ is an apocalyptic number.

123646 is a deficient number, since it is larger than the sum of its proper divisors (63338).

123646 is a wasteful number, since it uses less digits than its factorization.

123646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 506.

The product of its digits is 864, while the sum is 22.

The square root of 123646 is about 351.6333317534. The cubic root of 123646 is about 49.8188108698.

Adding to 123646 its reverse (646321), we get a palindrome (769967).

The spelling of 123646 in words is "one hundred twenty-three thousand, six hundred forty-six".