655656500 has 48 divisors (see below), whose sum is σ = 1436460480. Its totient is φ = 261437600.

The previous prime is 655656497. The next prime is 655656509. The reversal of 655656500 is 5656556.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655656509) 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, 171611 + ... + 175389.

It is an arithmetic number, because the mean of its divisors is an integer number (29926260).

Almost surely, 2^655656500 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 655656500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (718230240).

655656500 is an abundant number, since it is smaller than the sum of its proper divisors (780803980).

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

655656500 is a wasteful number, since it uses less digits than its factorization.

655656500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4145 (or 4133 counting only the distinct ones).

The product of its (nonzero) digits is 135000, while the sum is 38.

The square root of 655656500 is about 25605.7903607758. The cubic root of 655656500 is about 868.7446111841.

It can be divided in two parts, 65 and 5656500, that added together give a palindrome (5656565).

The spelling of 655656500 in words is "six hundred fifty-five million, six hundred fifty-six thousand, five hundred".