655240145 has 8 divisors (see below), whose sum is σ = 898615104. Its totient is φ = 449307504.

The previous prime is 655240133. The next prime is 655240177. The reversal of 655240145 is 541042556.

655240145 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 655240145 - 2⁶ = 655240081 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9360539 + ... + 9360608.

It is an arithmetic number, because the mean of its divisors is an integer number (112326888).

Almost surely, 2^655240145 is an apocalyptic number.

It is an amenable number.

655240145 is a deficient number, since it is larger than the sum of its proper divisors (243374959).

655240145 is a wasteful number, since it uses less digits than its factorization.

655240145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18721159.

The product of its (nonzero) digits is 24000, while the sum is 32.

The square root of 655240145 is about 25597.6589749922. The cubic root of 655240145 is about 868.5606821739.

The spelling of 655240145 in words is "six hundred fifty-five million, two hundred forty thousand, one hundred forty-five".