655100 has 18 divisors (see below), whose sum is σ = 1421784. Its totient is φ = 262000.

The previous prime is 655087. The next prime is 655103. The reversal of 655100 is 1556.

It is a nialpdrome in base 10.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 655100.

It is not an unprimeable number, because it can be changed into a prime (655103) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3176 + ... + 3375.

It is an arithmetic number, because the mean of its divisors is an integer number (78988).

2⁶⁵⁵¹⁰⁰ is an apocalyptic number.

It is an amenable number.

655100 is an abundant number, since it is smaller than the sum of its proper divisors (766684).

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

655100 is a wasteful number, since it uses less digits than its factorization.

655100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6565 (or 6558 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 655100 is about 809.3824806604. The cubic root of 655100 is about 86.8498754184.

Adding to 655100 its reverse (1556), we get a palindrome (656656).

The spelling of 655100 in words is "six hundred fifty-five thousand, one hundred".