1679365985 has 8 divisors (see below), whose sum is σ = 2198442816. Its totient is φ = 1221357040.

The previous prime is 1679365967. The next prime is 1679365997. The reversal of 1679365985 is 5895639761.

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

It is not a de Polignac number, because 1679365985 - 2¹⁴ = 1679349601 is a prime.

It is a super-2 number, since 2×1679365985² = 5640540223150040450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15266909 + ... + 15267018.

It is an arithmetic number, because the mean of its divisors is an integer number (274805352).

Almost surely, 2^1679365985 is an apocalyptic number.

It is an amenable number.

1679365985 is a deficient number, since it is larger than the sum of its proper divisors (519076831).

1679365985 is a wasteful number, since it uses less digits than its factorization.

1679365985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30533943.

The product of its digits is 12247200, while the sum is 59.

The square root of 1679365985 is about 40980.0681429399. The cubic root of 1679365985 is about 1188.6348266699.

The spelling of 1679365985 in words is "one billion, six hundred seventy-nine million, three hundred sixty-five thousand, nine hundred eighty-five".