1206506005 has 8 divisors (see below), whose sum is σ = 1448733600. Its totient is φ = 964587216.

The previous prime is 1206505991. The next prime is 1206506033. The reversal of 1206506005 is 5006056021.

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 1206506005 - 2⁷ = 1206505877 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, 68515 + ... + 84304.

It is an arithmetic number, because the mean of its divisors is an integer number (181091700).

Almost surely, 2^1206506005 is an apocalyptic number.

It is an amenable number.

1206506005 is a deficient number, since it is larger than the sum of its proper divisors (242227595).

1206506005 is a wasteful number, since it uses less digits than its factorization.

1206506005 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154403.

The product of its (nonzero) digits is 1800, while the sum is 25.

The square root of 1206506005 is about 34734.7953067238. The cubic root of 1206506005 is about 1064.5755705520.

The spelling of 1206506005 in words is "one billion, two hundred six million, five hundred six thousand, five".