1680037 has 4 divisors (see below), whose sum is σ = 1768480. Its totient is φ = 1591596.

The previous prime is 1680023. The next prime is 1680071. The reversal of 1680037 is 7300861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1680037 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1679993 and 1680020.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1683037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44193 + ... + 44230.

It is an arithmetic number, because the mean of its divisors is an integer number (442120).

2^1680037 is an apocalyptic number.

It is an amenable number.

1680037 is a deficient number, since it is larger than the sum of its proper divisors (88443).

1680037 is an equidigital number, since it uses as much as digits as its factorization.

1680037 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 88442.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 1680037 is about 1296.1624126629. The cubic root of 1680037 is about 118.8793117676.

Adding to 1680037 its reverse (7300861), we get a palindrome (8980898).

The spelling of 1680037 in words is "one million, six hundred eighty thousand, thirty-seven".