1728646606 has 4 divisors (see below), whose sum is σ = 2592969912. Its totient is φ = 864323302.

The previous prime is 1728646589. The next prime is 1728646669. The reversal of 1728646606 is 6066468271.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 432161650 + ... + 432161653.

It is an arithmetic number, because the mean of its divisors is an integer number (648242478).

Almost surely, 2^1728646606 is an apocalyptic number.

1728646606 is a deficient number, since it is larger than the sum of its proper divisors (864323306).

1728646606 is an equidigital number, since it uses as much as digits as its factorization.

1728646606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 864323305.

The product of its (nonzero) digits is 580608, while the sum is 46.

The square root of 1728646606 is about 41576.9961156407. The cubic root of 1728646606 is about 1200.1496586493.

The spelling of 1728646606 in words is "one billion, seven hundred twenty-eight million, six hundred forty-six thousand, six hundred six".