1021608 has 48 divisors (see below), whose sum is σ = 3163680. Its totient is φ = 291744.

The previous prime is 1021577. The next prime is 1021621. The reversal of 1021608 is 8061201.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 11 ways as a sum of consecutive naturals, for example, 510 + ... + 1517.

It is an arithmetic number, because the mean of its divisors is an integer number (65910).

2^1021608 is an apocalyptic number.

1021608 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1021608 is an abundant number, since it is smaller than the sum of its proper divisors (2142072).

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

1021608 is a wasteful number, since it uses less digits than its factorization.

1021608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2046 (or 2039 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 1021608 is about 1010.7462589592. The cubic root of 1021608 is about 100.7151402200.

Adding to 1021608 its reverse (8061201), we get a palindrome (9082809).

The spelling of 1021608 in words is "one million, twenty-one thousand, six hundred eight".