1668452 has 6 divisors (see below), whose sum is σ = 2919798. Its totient is φ = 834224.

The previous prime is 1668449. The next prime is 1668467. The reversal of 1668452 is 2548661.

It can be written as a sum of positive squares in only one way, i.e., 1597696 + 70756 = 1264^2 + 266^2 .

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 as a sum of consecutive naturals, namely, 208553 + ... + 208560.

It is an arithmetic number, because the mean of its divisors is an integer number (486633).

2^1668452 is an apocalyptic number.

It is an amenable number.

1668452 is a deficient number, since it is larger than the sum of its proper divisors (1251346).

1668452 is a wasteful number, since it uses less digits than its factorization.

1668452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 417117 (or 417115 counting only the distinct ones).

The product of its digits is 11520, while the sum is 32.

The square root of 1668452 is about 1291.6857202896. The cubic root of 1668452 is about 118.6054299768.

The spelling of 1668452 in words is "one million, six hundred sixty-eight thousand, four hundred fifty-two".