1679660 has 12 divisors (see below), whose sum is σ = 3527328. Its totient is φ = 671856.

The previous prime is 1679659. The next prime is 1679669. The reversal of 1679660 is 669761.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 1679660.

It is not an unprimeable number, because it can be changed into a prime (1679669) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 41972 + ... + 42011.

It is an arithmetic number, because the mean of its divisors is an integer number (293944).

2^1679660 is an apocalyptic number.

1679660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1679660 is an abundant number, since it is smaller than the sum of its proper divisors (1847668).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1679660 is a wasteful number, since it uses less digits than its factorization.

1679660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83992 (or 83990 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 35.

The square root of 1679660 is about 1296.0169751975. The cubic root of 1679660 is about 118.8704189370.

The spelling of 1679660 in words is "one million, six hundred seventy-nine thousand, six hundred sixty".