1206456505 has 4 divisors (see below), whose sum is σ = 1447747812. Its totient is φ = 965165200.

The previous prime is 1206456497. The next prime is 1206456523. The reversal of 1206456505 is 5056546021.

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 690848656 + 515607849 = 26284^2 + 22707^2 .

It is not a de Polignac number, because 1206456505 - 2³ = 1206456497 is a prime.

It is a Duffinian 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, 120645646 + ... + 120645655.

It is an arithmetic number, because the mean of its divisors is an integer number (361936953).

Almost surely, 2^1206456505 is an apocalyptic number.

It is an amenable number.

1206456505 is a deficient number, since it is larger than the sum of its proper divisors (241291307).

1206456505 is an equidigital number, since it uses as much as digits as its factorization.

1206456505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241291306.

The product of its (nonzero) digits is 36000, while the sum is 34.

The square root of 1206456505 is about 34734.0827574301. The cubic root of 1206456505 is about 1064.5610113728.

The spelling of 1206456505 in words is "one billion, two hundred six million, four hundred fifty-six thousand, five hundred five".