655955768 has 48 divisors (see below), whose sum is σ = 1384734120. Its totient is φ = 289561536.

The previous prime is 655955767. The next prime is 655955777. The reversal of 655955768 is 867559556.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655955767) 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, 49055 + ... + 60977.

Almost surely, 2^655955768 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 655955768, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (692367060).

655955768 is an abundant number, since it is smaller than the sum of its proper divisors (728778352).

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

655955768 is a wasteful number, since it uses less digits than its factorization.

655955768 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11988 (or 11961 counting only the distinct ones).

The product of its digits is 11340000, while the sum is 56.

The square root of 655955768 is about 25611.6334504459. The cubic root of 655955768 is about 868.8767677407.

The spelling of 655955768 in words is "six hundred fifty-five million, nine hundred fifty-five thousand, seven hundred sixty-eight".