655556650 has 24 divisors (see below), whose sum is σ = 1393526880. Its totient is φ = 224762160.

The previous prime is 655556647. The next prime is 655556651. The reversal of 655556650 is 56655556.

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 655556597 and 655556606.

It is not an unprimeable number, because it can be changed into a prime (655556651) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 936160 + ... + 936859.

It is an arithmetic number, because the mean of its divisors is an integer number (58063620).

Almost surely, 2^655556650 is an apocalyptic number.

655556650 is an abundant number, since it is smaller than the sum of its proper divisors (737970230).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

655556650 is a wasteful number, since it uses less digits than its factorization.

655556650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1873038 (or 1873033 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 43.

The square root of 655556650 is about 25603.8405322327. The cubic root of 655556650 is about 868.7005085413.

The spelling of 655556650 in words is "six hundred fifty-five million, five hundred fifty-six thousand, six hundred fifty".