655612056 has 384 divisors, whose sum is σ = 2214051840. Its totient is φ = 179625600.

The previous prime is 655612007. The next prime is 655612057. The reversal of 655612056 is 650216556.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a self number, because there is not a number n which added to its sum of digits gives 655612056.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655612057) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 15246771 + ... + 15246813.

It is an arithmetic number, because the mean of its divisors is an integer number (5765760).

Almost surely, 2^655612056 is an apocalyptic number.

655612056 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 655612056, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1107025920).

655612056 is an abundant number, since it is smaller than the sum of its proper divisors (1558439784).

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

655612056 is a wasteful number, since it uses less digits than its factorization.

655612056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 113 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 36.

The square root of 655612056 is about 25604.9224954890. The cubic root of 655612056 is about 868.7249813129.

The spelling of 655612056 in words is "six hundred fifty-five million, six hundred twelve thousand, fifty-six".