1879686 has 40 divisors (see below), whose sum is σ = 4329864. Its totient is φ = 609120.

The previous prime is 1879663. The next prime is 1879723. The reversal of 1879686 is 6869781.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

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 19 ways as a sum of consecutive naturals, for example, 6501 + ... + 6783.

2^1879686 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1879686, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2164932).

1879686 is an abundant number, since it is smaller than the sum of its proper divisors (2450178).

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

1879686 is a wasteful number, since it uses less digits than its factorization.

1879686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338 (or 329 counting only the distinct ones).

The product of its digits is 145152, while the sum is 45.

The square root of 1879686 is about 1371.0164112803. The cubic root of 1879686 is about 123.4132442112.

Subtracting from 1879686 its sum of digits (45), we obtain a square (1879641 = 1371²).

The spelling of 1879686 in words is "one million, eight hundred seventy-nine thousand, six hundred eighty-six".