655045 has 4 divisors (see below), whose sum is σ = 786060. Its totient is φ = 524032.

The previous prime is 655043. The next prime is 655069. The reversal of 655045 is 540556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 391876 + 263169 = 626^2 + 513^2 .

It is a cyclic number.

It is not a de Polignac number, because 655045 - 2¹ = 655043 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (655043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65500 + ... + 65509.

It is an arithmetic number, because the mean of its divisors is an integer number (196515).

2⁶⁵⁵⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

655045 is a deficient number, since it is larger than the sum of its proper divisors (131015).

655045 is a wasteful number, since it uses less digits than its factorization.

655045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131014.

The product of its (nonzero) digits is 3000, while the sum is 25.

The square root of 655045 is about 809.3485034273. The cubic root of 655045 is about 86.8474448089.

The spelling of 655045 in words is "six hundred fifty-five thousand, forty-five".