1206005 has 8 divisors (see below), whose sum is σ = 1510272. Its totient is φ = 922768.

The previous prime is 1205999. The next prime is 1206013. The reversal of 1206005 is 5006021.

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 1206005 - 2⁸ = 1205749 is a prime.

It is a congruent 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, 5129 + ... + 5358.

It is an arithmetic number, because the mean of its divisors is an integer number (188784).

2^1206005 is an apocalyptic number.

It is an amenable number.

1206005 is a deficient number, since it is larger than the sum of its proper divisors (304267).

1206005 is a wasteful number, since it uses less digits than its factorization.

1206005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10515.

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

The square root of 1206005 is about 1098.1825895542. The cubic root of 1206005 is about 106.4428194154.

It can be divided in two parts, 120 and 6005, that multiplied together give a triangular number (720600 = T₁₂₀₀).

The spelling of 1206005 in words is "one million, two hundred six thousand, five".