610985 has 8 divisors (see below), whose sum is σ = 741960. Its totient is φ = 482944.

The previous prime is 610969. The next prime is 610993. The reversal of 610985 is 589016.

It can be written as a sum of positive squares in 4 ways, for example, as 137641 + 473344 = 371^2 + 688^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 610985 - 2⁴ = 610969 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 242 + ... + 1131.

It is an arithmetic number, because the mean of its divisors is an integer number (92745).

2⁶¹⁰⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

610985 is a deficient number, since it is larger than the sum of its proper divisors (130975).

610985 is a wasteful number, since it uses less digits than its factorization.

610985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467.

The product of its (nonzero) digits is 2160, while the sum is 29.

The square root of 610985 is about 781.6552948711. The cubic root of 610985 is about 84.8548850370.

The spelling of 610985 in words is "six hundred ten thousand, nine hundred eighty-five".