1668576 has 96 divisors (see below), whose sum is σ = 5419008. Its totient is φ = 437760.

The previous prime is 1668553. The next prime is 1668587. The reversal of 1668576 is 6758661.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (39).

Its product of digits (60480) is a multiple of the sum of its prime divisors (216).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 8641 + ... + 8831.

It is an arithmetic number, because the mean of its divisors is an integer number (56448).

2^1668576 is an apocalyptic number.

1668576 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1668576, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2709504).

1668576 is an abundant number, since it is smaller than the sum of its proper divisors (3750432).

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

1668576 is a wasteful number, since it uses less digits than its factorization.

1668576 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224 (or 216 counting only the distinct ones).

The product of its digits is 60480, while the sum is 39.

The square root of 1668576 is about 1291.7337186897. The cubic root of 1668576 is about 118.6083681712.

It can be divided in two parts, 16685 and 76, that added together give a palindrome (16761).

The spelling of 1668576 in words is "one million, six hundred sixty-eight thousand, five hundred seventy-six".