655012008 has 200 divisors, whose sum is σ = 2145369930. Its totient is φ = 186701760.

The previous prime is 655012003. The next prime is 655012019. The reversal of 655012008 is 800210556.

655012008 is a `hidden beast` number, since 655 + 0 + 1 + 2 + 0 + 0 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 654234084 + 777924 = 25578^2 + 882^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (655012003) by changing a digit.

It is a polite number, since it can be written in 49 ways as a sum of consecutive naturals, for example, 1555638 + ... + 1556058.

Almost surely, 2^655012008 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655012008, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1072684965).

655012008 is an abundant number, since it is smaller than the sum of its proper divisors (1490357922).

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

655012008 is an equidigital number, since it uses as much as digits as its factorization.

655012008 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 467 (or 433 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 655012008 is about 25593.2023787567. The cubic root of 655012008 is about 868.4598673143.

The spelling of 655012008 in words is "six hundred fifty-five million, twelve thousand, eight".