655825668 has 24 divisors (see below), whose sum is σ = 1567584480. Its totient is φ = 213276480.

The previous prime is 655825663. The next prime is 655825673. The reversal of 655825668 is 866528556.

It is an interprime number because it is at equal distance from previous prime (655825663) and next prime (655825673).

It is a self number, because there is not a number n which added to its sum of digits gives 655825668.

It is not an unprimeable number, because it can be changed into a prime (655825663) 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, 665998 + ... + 666981.

It is an arithmetic number, because the mean of its divisors is an integer number (65316020).

Almost surely, 2^655825668 is an apocalyptic number.

It is an amenable number.

655825668 is an abundant number, since it is smaller than the sum of its proper divisors (911758812).

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

655825668 is a wasteful number, since it uses less digits than its factorization.

655825668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1333027 (or 1333025 counting only the distinct ones).

The product of its digits is 3456000, while the sum is 51.

The square root of 655825668 is about 25609.0934630650. The cubic root of 655825668 is about 868.8193206042.

The spelling of 655825668 in words is "six hundred fifty-five million, eight hundred twenty-five thousand, six hundred sixty-eight".