1664714 has 8 divisors (see below), whose sum is σ = 2523108. Its totient is φ = 823680.

The previous prime is 1664713. The next prime is 1664771. The reversal of 1664714 is 4174661.

It can be written as a sum of positive squares in 2 ways, for example, as 1399489 + 265225 = 1183^2 + 515^2 .

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

It is not an unprimeable number, because it can be changed into a prime (1664711) 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, 4097 + ... + 4484.

2^1664714 is an apocalyptic number.

1664714 is a deficient number, since it is larger than the sum of its proper divisors (858394).

1664714 is an equidigital number, since it uses as much as digits as its factorization.

1664714 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8680.

The product of its digits is 4032, while the sum is 29.

The square root of 1664714 is about 1290.2379625480. The cubic root of 1664714 is about 118.5167892085.

It can be divided in two parts, 16647 and 14, that added together give a palindrome (16661).

The spelling of 1664714 in words is "one million, six hundred sixty-four thousand, seven hundred fourteen".