1206345406 has 32 divisors (see below), whose sum is σ = 2135750400. Its totient is φ = 510752088.

The previous prime is 1206345391. The next prime is 1206345409. The reversal of 1206345406 is 6045436021.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206345409) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46345 + ... + 67531.

It is an arithmetic number, because the mean of its divisors is an integer number (66742200).

Almost surely, 2^1206345406 is an apocalyptic number.

1206345406 is a deficient number, since it is larger than the sum of its proper divisors (929404994).

1206345406 is an equidigital number, since it uses as much as digits as its factorization.

1206345406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21293 (or 21279 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 1206345406 is about 34732.4834412974. The cubic root of 1206345406 is about 1064.5283329480.

The spelling of 1206345406 in words is "one billion, two hundred six million, three hundred forty-five thousand, four hundred six".