655236641 has 8 divisors (see below), whose sum is σ = 690300000. Its totient is φ = 620231040.

The previous prime is 655236599. The next prime is 655236653. The reversal of 655236641 is 146632556.

It is a happy number.

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 655236641 - 2⁶ = 655236577 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 655236595 and 655236604.

It is not an unprimeable number, because it can be changed into a prime (655236671) by changing a digit.

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, 9926 + ... + 37536.

It is an arithmetic number, because the mean of its divisors is an integer number (86287500).

Almost surely, 2^655236641 is an apocalyptic number.

It is an amenable number.

655236641 is a deficient number, since it is larger than the sum of its proper divisors (35063359).

655236641 is a wasteful number, since it uses less digits than its factorization.

655236641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28879.

The product of its digits is 129600, while the sum is 38.

The square root of 655236641 is about 25597.5905311418. The cubic root of 655236641 is about 868.5591339161.

The spelling of 655236641 in words is "six hundred fifty-five million, two hundred thirty-six thousand, six hundred forty-one".