1682641 has 4 divisors (see below), whose sum is σ = 1687972. Its totient is φ = 1677312.

The previous prime is 1682627. The next prime is 1682663. The reversal of 1682641 is 1462861.

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

It can be written as a sum of positive squares in 2 ways, for example, as 518400 + 1164241 = 720^2 + 1079^2 .

It is a cyclic number.

It is not a de Polignac number, because 1682641 - 2¹¹ = 1680593 is a prime.

It is a Duffinian number.

1682641 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (1682671) 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 3 ways as a sum of consecutive naturals, for example, 2160 + ... + 2833.

It is an arithmetic number, because the mean of its divisors is an integer number (421993).

2^1682641 is an apocalyptic number.

It is an amenable number.

1682641 is a deficient number, since it is larger than the sum of its proper divisors (5331).

1682641 is an equidigital number, since it uses as much as digits as its factorization.

1682641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5330.

The product of its digits is 2304, while the sum is 28.

The square root of 1682641 is about 1297.1665274744. The cubic root of 1682641 is about 118.9406996871.

It can be divided in two parts, 168 and 2641, that added together give a square (2809 = 53²).

The spelling of 1682641 in words is "one million, six hundred eighty-two thousand, six hundred forty-one".