1728676669 has 8 divisors (see below), whose sum is σ = 1770639552. Its totient is φ = 1686793920.

The previous prime is 1728676661. The next prime is 1728676681. The reversal of 1728676669 is 9666768271.

It is a happy number.

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 1728676669 - 2³ = 1728676661 is a prime.

It is a super-2 number, since 2×1728676669² = 5976646051889871122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1728676661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24837 + ... + 63829.

It is an arithmetic number, because the mean of its divisors is an integer number (221329944).

Almost surely, 2^1728676669 is an apocalyptic number.

It is an amenable number.

1728676669 is a deficient number, since it is larger than the sum of its proper divisors (41962883).

1728676669 is a wasteful number, since it uses less digits than its factorization.

1728676669 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40067.

The product of its digits is 9144576, while the sum is 58.

The square root of 1728676669 is about 41577.3576481238. The cubic root of 1728676669 is about 1200.1566159013.

The spelling of 1728676669 in words is "one billion, seven hundred twenty-eight million, six hundred seventy-six thousand, six hundred sixty-nine".