1679706769 has 8 divisors (see below), whose sum is σ = 1831813760. Its totient is φ = 1530871056.

The previous prime is 1679706757. The next prime is 1679706781. The reversal of 1679706769 is 9676079761.

It is an interprime number because it is at equal distance from previous prime (1679706757) and next prime (1679706781).

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

It is not a de Polignac number, because 1679706769 - 2¹⁷ = 1679575697 is a prime.

It is a super-2 number, since 2×1679706769² = 5642829659648838722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1679706869) by changing a digit.

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, 816747 + ... + 818800.

It is an arithmetic number, because the mean of its divisors is an integer number (228976720).

Almost surely, 2^1679706769 is an apocalyptic number.

It is an amenable number.

1679706769 is a deficient number, since it is larger than the sum of its proper divisors (152106991).

1679706769 is a wasteful number, since it uses less digits than its factorization.

1679706769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1635639.

The product of its (nonzero) digits is 6001128, while the sum is 58.

The square root of 1679706769 is about 40984.2258558095. The cubic root of 1679706769 is about 1188.7152221561.

The spelling of 1679706769 in words is "one billion, six hundred seventy-nine million, seven hundred six thousand, seven hundred sixty-nine".