655067660 has 144 divisors (see below), whose sum is σ = 1588235040. Its totient is φ = 226437120.

The previous prime is 655067627. The next prime is 655067671. The reversal of 655067660 is 66760556.

It is a super-2 number, since 2×655067660² = 858227278355751200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (41).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 4018739 + ... + 4018901.

It is an arithmetic number, because the mean of its divisors is an integer number (11029410).

Almost surely, 2^655067660 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 655067660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (794117520).

655067660 is an abundant number, since it is smaller than the sum of its proper divisors (933167380).

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

655067660 is a wasteful number, since it uses less digits than its factorization.

655067660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268 (or 253 counting only the distinct ones).

The product of its (nonzero) digits is 226800, while the sum is 41.

The square root of 655067660 is about 25594.2895974864. The cubic root of 655067660 is about 868.4844623645.

The spelling of 655067660 in words is "six hundred fifty-five million, sixty-seven thousand, six hundred sixty".