123655646 has 8 divisors (see below), whose sum is σ = 185640024. Its totient is φ = 61775640.

The previous prime is 123655639. The next prime is 123655661. The reversal of 123655646 is 646556321.

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 pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23060 + ... + 27911.

It is an arithmetic number, because the mean of its divisors is an integer number (23205003).

Almost surely, 2^123655646 is an apocalyptic number.

123655646 is a deficient number, since it is larger than the sum of its proper divisors (61984378).

123655646 is a wasteful number, since it uses less digits than its factorization.

123655646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52186.

The product of its digits is 129600, while the sum is 38.

The square root of 123655646 is about 11120.0560250387. The cubic root of 123655646 is about 498.2010634166.

The spelling of 123655646 in words is "one hundred twenty-three million, six hundred fifty-five thousand, six hundred forty-six".