1664084 has 12 divisors (see below), whose sum is σ = 2921184. Its totient is φ = 829464.

The previous prime is 1664083. The next prime is 1664101. The reversal of 1664084 is 4804661.

It is a super-4 number, since 4×1664084⁴ (a number of 26 digits) contains 4444 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664083) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2249 + ... + 2895.

It is an arithmetic number, because the mean of its divisors is an integer number (243432).

2^1664084 is an apocalyptic number.

It is an amenable number.

1664084 is a deficient number, since it is larger than the sum of its proper divisors (1257100).

1664084 is a wasteful number, since it uses less digits than its factorization.

1664084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1294 (or 1292 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 29.

The square root of 1664084 is about 1289.9937984347. The cubic root of 1664084 is about 118.5018366905.

The spelling of 1664084 in words is "one million, six hundred sixty-four thousand, eighty-four".