1679965 has 12 divisors (see below), whose sum is σ = 2345436. Its totient is φ = 1151808.

The previous prime is 1679963. The next prime is 1679981. The reversal of 1679965 is 5699761.

It can be written as a sum of positive squares in 2 ways, for example, as 213444 + 1466521 = 462^2 + 1211^2 .

It is not a de Polignac number, because 1679965 - 2¹ = 1679963 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3184 + ... + 3673.

It is an arithmetic number, because the mean of its divisors is an integer number (195453).

2^1679965 is an apocalyptic number.

It is an amenable number.

1679965 is a deficient number, since it is larger than the sum of its proper divisors (665471).

1679965 is an equidigital number, since it uses as much as digits as its factorization.

1679965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6876 (or 6869 counting only the distinct ones).

The product of its digits is 102060, while the sum is 43.

The square root of 1679965 is about 1296.1346380681. The cubic root of 1679965 is about 118.8776135048.

The spelling of 1679965 in words is "one million, six hundred seventy-nine thousand, nine hundred sixty-five".