1679881 has 8 divisors (see below), whose sum is σ = 1964864. Its totient is φ = 1406160.

The previous prime is 1679863. The next prime is 1679903. The reversal of 1679881 is 1889761.

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

It is not a de Polignac number, because 1679881 - 2⁵ = 1679849 is a prime.

It is a super-2 number, since 2×1679881² = 5644000348322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1679801) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2490 + ... + 3091.

It is an arithmetic number, because the mean of its divisors is an integer number (245608).

2^1679881 is an apocalyptic number.

It is an amenable number.

1679881 is a deficient number, since it is larger than the sum of its proper divisors (284983).

1679881 is an equidigital number, since it uses as much as digits as its factorization.

1679881 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5631.

The product of its digits is 24192, while the sum is 40.

The square root of 1679881 is about 1296.1022336220. The cubic root of 1679881 is about 118.8756321370.

It can be divided in two parts, 16 and 79881, that added together give a palindrome (79897).

The spelling of 1679881 in words is "one million, six hundred seventy-nine thousand, eight hundred eighty-one".