1664352 has 36 divisors (see below), whose sum is σ = 4733820. Its totient is φ = 554688.

The previous prime is 1664291. The next prime is 1664353. The reversal of 1664352 is 2534661.

1664352 is a `hidden beast` number, since 16 + 643 + 5 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1664353) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2602 + ... + 3177.

It is an arithmetic number, because the mean of its divisors is an integer number (131495).

2^1664352 is an apocalyptic number.

1664352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1664352 is an abundant number, since it is smaller than the sum of its proper divisors (3069468).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1664352 is a wasteful number, since it uses less digits than its factorization.

1664352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5795 (or 5784 counting only the distinct ones).

The product of its digits is 4320, while the sum is 27.

The square root of 1664352 is about 1290.0976707211. The cubic root of 1664352 is about 118.5081979053.

It can be divided in two parts, 1664 and 352, that added together give a triangular number (2016 = T₆₃).

The spelling of 1664352 in words is "one million, six hundred sixty-four thousand, three hundred fifty-two".