610405 has 4 divisors (see below), whose sum is σ = 732492. Its totient is φ = 488320.

The previous prime is 610391. The next prime is 610409. The reversal of 610405 is 504016.

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 123201 + 487204 = 351^2 + 698^2 .

It is not a de Polignac number, because 610405 - 2¹¹ = 608357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (610409) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61036 + ... + 61045.

It is an arithmetic number, because the mean of its divisors is an integer number (183123).

2⁶¹⁰⁴⁰⁵ is an apocalyptic number.

It is an amenable number.

610405 is a deficient number, since it is larger than the sum of its proper divisors (122087).

610405 is a wasteful number, since it uses less digits than its factorization.

610405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122086.

The product of its (nonzero) digits is 120, while the sum is 16.

The square root of 610405 is about 781.2841992515. The cubic root of 610405 is about 84.8280259952.

The spelling of 610405 in words is "six hundred ten thousand, four hundred five".