120653645 has 8 divisors (see below), whose sum is σ = 165467904. Its totient is φ = 82733904.

The previous prime is 120653639. The next prime is 120653677. The reversal of 120653645 is 546356021.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 120653645 - 2⁸ = 120653389 is a prime.

It is a super-3 number, since 3×120653645³ (a number of 25 digits) contains 333 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1723589 + ... + 1723658.

It is an arithmetic number, because the mean of its divisors is an integer number (20683488).

Almost surely, 2^120653645 is an apocalyptic number.

It is an amenable number.

120653645 is a deficient number, since it is larger than the sum of its proper divisors (44814259).

120653645 is an equidigital number, since it uses as much as digits as its factorization.

120653645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3447259.

The product of its (nonzero) digits is 21600, while the sum is 32.

The square root of 120653645 is about 10984.2453086227. The cubic root of 120653645 is about 494.1363643606.

The spelling of 120653645 in words is "one hundred twenty million, six hundred fifty-three thousand, six hundred forty-five".