655611080 has 64 divisors (see below), whose sum is σ = 1505226240. Its totient is φ = 256937472.

The previous prime is 655611071. The next prime is 655611083. The reversal of 655611080 is 80116556.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (655611083) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 597092 + ... + 598188.

It is an arithmetic number, because the mean of its divisors is an integer number (23519160).

Almost surely, 2^655611080 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 655611080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (752613120).

655611080 is an abundant number, since it is smaller than the sum of its proper divisors (849615160).

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

655611080 is a wasteful number, since it uses less digits than its factorization.

655611080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1398 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 32.

The square root of 655611080 is about 25604.9034366467. The cubic root of 655611080 is about 868.7245502266.

The spelling of 655611080 in words is "six hundred fifty-five million, six hundred eleven thousand, eighty".