612005 has 4 divisors (see below), whose sum is σ = 734412. Its totient is φ = 489600.

The previous prime is 611999. The next prime is 612011. The reversal of 612005 is 500216.

612005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is an interprime number because it is at equal distance from previous prime (611999) and next prime (612011).

It can be written as a sum of positive squares in 2 ways, for example, as 113569 + 498436 = 337^2 + 706^2 .

It is not a de Polignac number, because 612005 - 2¹² = 607909 is a prime.

It is a Duffinian number.

It is a plaindrome in base 11.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61196 + ... + 61205.

It is an arithmetic number, because the mean of its divisors is an integer number (183603).

2⁶¹²⁰⁰⁵ is an apocalyptic number.

It is an amenable number.

612005 is a deficient number, since it is larger than the sum of its proper divisors (122407).

612005 is a wasteful number, since it uses less digits than its factorization.

612005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122406.

The product of its (nonzero) digits is 60, while the sum is 14.

The square root of 612005 is about 782.3074843052. The cubic root of 612005 is about 84.9020787013.

The spelling of 612005 in words is "six hundred twelve thousand, five".