120320663 has 4 divisors (see below), whose sum is σ = 120457200. Its totient is φ = 120184128.

The previous prime is 120320657. The next prime is 120320687. The reversal of 120320663 is 366023021.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-120320663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (120322663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 66938 + ... + 68711.

It is an arithmetic number, because the mean of its divisors is an integer number (30114300).

Almost surely, 2^120320663 is an apocalyptic number.

120320663 is a deficient number, since it is larger than the sum of its proper divisors (136537).

120320663 is an equidigital number, since it uses as much as digits as its factorization.

120320663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136536.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 120320663 is about 10969.0775820030. The cubic root of 120320663 is about 493.6813701973.

Adding to 120320663 its reverse (366023021), we get a palindrome (486343684).

The spelling of 120320663 in words is "one hundred twenty million, three hundred twenty thousand, six hundred sixty-three".