1679671 has 16 divisors (see below), whose sum is σ = 2016000. Its totient is φ = 1398264.

The previous prime is 1679669. The next prime is 1679681. The reversal of 1679671 is 1769761.

It is not a de Polignac number, because 1679671 - 2¹ = 1679669 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1679671.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679641) 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 15 ways as a sum of consecutive naturals, for example, 20196 + ... + 20278.

It is an arithmetic number, because the mean of its divisors is an integer number (126000).

2^1679671 is an apocalyptic number.

1679671 is a deficient number, since it is larger than the sum of its proper divisors (336329).

1679671 is an frugal number, since it uses more digits than its factorization.

1679671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163 (or 149 counting only the distinct ones).

The product of its digits is 15876, while the sum is 37.

The square root of 1679671 is about 1296.0212189621. The cubic root of 1679671 is about 118.8706784283.

The spelling of 1679671 in words is "one million, six hundred seventy-nine thousand, six hundred seventy-one".