655950 has 24 divisors (see below), whose sum is σ = 1627128. Its totient is φ = 174880.

The previous prime is 655943. The next prime is 655961. The reversal of 655950 is 59556.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2037 + ... + 2336.

It is an arithmetic number, because the mean of its divisors is an integer number (67797).

2⁶⁵⁵⁹⁵⁰ is an apocalyptic number.

655950 is an abundant number, since it is smaller than the sum of its proper divisors (971178).

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

655950 is a wasteful number, since it uses less digits than its factorization.

655950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4388 (or 4383 counting only the distinct ones).

The product of its (nonzero) digits is 6750, while the sum is 30.

The square root of 655950 is about 809.9074021146. The cubic root of 655950 is about 86.8874220976.

The spelling of 655950 in words is "six hundred fifty-five thousand, nine hundred fifty".