1679730505 has 8 divisors (see below), whose sum is σ = 2080698624. Its totient is φ = 1300436400.

The previous prime is 1679730497. The next prime is 1679730529. The reversal of 1679730505 is 5050379761.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1679730505 - 2³ = 1679730497 is a prime.

It is a Duffinian 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, 5418331 + ... + 5418640.

It is an arithmetic number, because the mean of its divisors is an integer number (260087328).

Almost surely, 2^1679730505 is an apocalyptic number.

It is an amenable number.

1679730505 is a deficient number, since it is larger than the sum of its proper divisors (400968119).

1679730505 is a wasteful number, since it uses less digits than its factorization.

1679730505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10837007.

The product of its (nonzero) digits is 198450, while the sum is 43.

The square root of 1679730505 is about 40984.5154296107. The cubic root of 1679730505 is about 1188.7208213896.

The spelling of 1679730505 in words is "one billion, six hundred seventy-nine million, seven hundred thirty thousand, five hundred five".