1683612 has 96 divisors (see below), whose sum is σ = 5322240. Its totient is φ = 449280.

The previous prime is 1683601. The next prime is 1683631. The reversal of 1683612 is 2163861.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12787 + ... + 12917.

It is an arithmetic number, because the mean of its divisors is an integer number (55440).

2^1683612 is an apocalyptic number.

1683612 is a gapful number since it is divisible by the number (12) 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 1683612, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2661120).

1683612 is an abundant number, since it is smaller than the sum of its proper divisors (3638628).

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

1683612 is a wasteful number, since it uses less digits than its factorization.

1683612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168 (or 160 counting only the distinct ones).

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

The square root of 1683612 is about 1297.5407508052. The cubic root of 1683612 is about 118.9635742855.

Subtracting 1683612 from its reverse (2163861), we obtain a square (480249 = 693²).

The spelling of 1683612 in words is "one million, six hundred eighty-three thousand, six hundred twelve".