655885641 has 8 divisors (see below), whose sum is σ = 912536640. Its totient is φ = 418245872.

The previous prime is 655885621. The next prime is 655885673. The reversal of 655885641 is 146588556.

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 655885641 - 2⁵ = 655885609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (655885621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4752726 + ... + 4752863.

It is an arithmetic number, because the mean of its divisors is an integer number (114067080).

Almost surely, 2^655885641 is an apocalyptic number.

It is an amenable number.

655885641 is a deficient number, since it is larger than the sum of its proper divisors (256650999).

655885641 is a wasteful number, since it uses less digits than its factorization.

655885641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9505615.

The product of its digits is 1152000, while the sum is 48.

The square root of 655885641 is about 25610.2643680224. The cubic root of 655885641 is about 868.8458033091.

The spelling of 655885641 in words is "six hundred fifty-five million, eight hundred eighty-five thousand, six hundred forty-one".