1662860 has 48 divisors (see below), whose sum is σ = 3749760. Its totient is φ = 618240.

The previous prime is 1662851. The next prime is 1662863. The reversal of 1662860 is 682661.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is not an unprimeable number, because it can be changed into a prime (1662863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27230 + ... + 27290.

It is an arithmetic number, because the mean of its divisors is an integer number (78120).

2^1662860 is an apocalyptic number.

1662860 is a gapful number since it is divisible by the number (10) 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 1662860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1874880).

1662860 is an abundant number, since it is smaller than the sum of its proper divisors (2086900).

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

1662860 is a wasteful number, since it uses less digits than its factorization.

1662860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 1662860 is about 1289.5192902784. The cubic root of 1662860 is about 118.4727752919.

The spelling of 1662860 in words is "one million, six hundred sixty-two thousand, eight hundred sixty".