655581010 has 64 divisors (see below), whose sum is σ = 1386139392. Its totient is φ = 218566656.

The previous prime is 655581007. The next prime is 655581011. The reversal of 655581010 is 10185556.

It is not an unprimeable number, because it can be changed into a prime (655581011) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1062222 + ... + 1062838.

It is an arithmetic number, because the mean of its divisors is an integer number (21658428).

Almost surely, 2^655581010 is an apocalyptic number.

655581010 is an abundant number, since it is smaller than the sum of its proper divisors (730558382).

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

655581010 is a wasteful number, since it uses less digits than its factorization.

655581010 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1027.

The product of its (nonzero) digits is 6000, while the sum is 31.

The square root of 655581010 is about 25604.3162376971. The cubic root of 655581010 is about 868.7112684974.

The spelling of 655581010 in words is "six hundred fifty-five million, five hundred eighty-one thousand, ten".