123664360 has 32 divisors (see below), whose sum is σ = 285768360. Its totient is φ = 48128256.

The previous prime is 123664327. The next prime is 123664361. The reversal of 123664360 is 63466321.

It can be written as a sum of positive squares in 4 ways, for example, as 121396324 + 2268036 = 11018^2 + 1506^2 .

It is not an unprimeable number, because it can be changed into a prime (123664361) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 40299 + ... + 43258.

Almost surely, 2^123664360 is an apocalyptic number.

123664360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

123664360 is an abundant number, since it is smaller than the sum of its proper divisors (162104000).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

123664360 is a wasteful number, since it uses less digits than its factorization.

123664360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83605 (or 83601 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 123664360 is about 11120.4478327089. The cubic root of 123664360 is about 498.2127658667.

The spelling of 123664360 in words is "one hundred twenty-three million, six hundred sixty-four thousand, three hundred sixty".