123646064 has 20 divisors (see below), whose sum is σ = 243626520. Its totient is φ = 60774720.

The previous prime is 123646051. The next prime is 123646067. The reversal of 123646064 is 460646321.

It is a self number, because there is not a number n which added to its sum of digits gives 123646064.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123646067) 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, 64547 + ... + 66434.

It is an arithmetic number, because the mean of its divisors is an integer number (12181326).

Almost surely, 2^123646064 is an apocalyptic number.

It is an amenable number.

123646064 is a deficient number, since it is larger than the sum of its proper divisors (119980456).

123646064 is a wasteful number, since it uses less digits than its factorization.

123646064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131048 (or 131042 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 32.

The square root of 123646064 is about 11119.6251735389. The cubic root of 123646064 is about 498.1881946528.

The spelling of 123646064 in words is "one hundred twenty-three million, six hundred forty-six thousand, sixty-four".