1660608 has 84 divisors (see below), whose sum is σ = 5044440. Its totient is φ = 535680.

The previous prime is 1660601. The next prime is 1660609. The reversal of 1660608 is 8060661.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nialpdrome in base 6.

It is not an unprimeable number, because it can be changed into a prime (1660601) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53553 + ... + 53583.

2^1660608 is an apocalyptic number.

1660608 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 1660608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2522220).

1660608 is an abundant number, since it is smaller than the sum of its proper divisors (3383832).

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

1660608 is an equidigital number, since it uses as much as digits as its factorization.

1660608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83 (or 36 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1660608 is about 1288.6458008312. The cubic root of 1660608 is about 118.4192688386.

Multiplying 1660608 by its sum of digits (27), we get a square (44836416 = 6696²).

1660608 divided by its sum of digits (27) gives a square (61504 = 248²).

Multiplying 1660608 by its product of nonzero digits (1728), we get a square (2869530624 = 53568²).

1660608 divided by its product of nonzero digits (1728) gives a square (961 = 31²).

The spelling of 1660608 in words is "one million, six hundred sixty thousand, six hundred eight".