1662408 has 48 divisors (see below), whose sum is σ = 4914000. Its totient is φ = 503520.

The previous prime is 1662403. The next prime is 1662439. The reversal of 1662408 is 8042661.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1662403) 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 11 ways as a sum of consecutive naturals, for example, 258 + ... + 1841.

It is an arithmetic number, because the mean of its divisors is an integer number (102375).

2^1662408 is an apocalyptic number.

1662408 is a gapful number since it is divisible by the number (18) 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 1662408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2457000).

1662408 is an abundant number, since it is smaller than the sum of its proper divisors (3251592).

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

1662408 is a wasteful number, since it uses less digits than its factorization.

1662408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2122 (or 2115 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 1662408 is about 1289.3440192594. The cubic root of 1662408 is about 118.4620398628.

The spelling of 1662408 in words is "one million, six hundred sixty-two thousand, four hundred eight".