1671682 has 4 divisors (see below), whose sum is σ = 2507526. Its totient is φ = 835840.

The previous prime is 1671679. The next prime is 1671689. The reversal of 1671682 is 2861761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1347921 + 323761 = 1161^2 + 569^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1671689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417919 + ... + 417922.

2^1671682 is an apocalyptic number.

1671682 is a deficient number, since it is larger than the sum of its proper divisors (835844).

1671682 is an equidigital number, since it uses as much as digits as its factorization.

1671682 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 835843.

The product of its digits is 4032, while the sum is 31.

The square root of 1671682 is about 1292.9354198876. The cubic root of 1671682 is about 118.6819177610.

It can be divided in two parts, 167 and 1682, that added together give a square (1849 = 43²).

The spelling of 1671682 in words is "one million, six hundred seventy-one thousand, six hundred eighty-two".