610655 has 4 divisors (see below), whose sum is σ = 732792. Its totient is φ = 488520.

The previous prime is 610651. The next prime is 610661. The reversal of 610655 is 556016.

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

It is not a de Polignac number, because 610655 - 2² = 610651 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 610655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61061 + ... + 61070.

It is an arithmetic number, because the mean of its divisors is an integer number (183198).

2⁶¹⁰⁶⁵⁵ is an apocalyptic number.

610655 is a deficient number, since it is larger than the sum of its proper divisors (122137).

610655 is a wasteful number, since it uses less digits than its factorization.

610655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122136.

The product of its (nonzero) digits is 900, while the sum is 23.

The square root of 610655 is about 781.4441758693. Note that the first 3 decimals coincide. The cubic root of 610655 is about 84.8396052538.

The spelling of 610655 in words is "six hundred ten thousand, six hundred fifty-five".